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Finding the Fourth Proportional to 18,978,650,082.66, 28,447,903,750.44 and 7,019,216,681.10

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Solution

The fourth proportional to 18,978,650,082.66, 28,447,903,750.44 and 7,019,216,681.10 is: 10,521,401,663.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,978,650,082.66 : 28,447,903,750.44 = 7,019,216,681.10 : x
  2. Step 2: Convert to fraction form
    18,978,650,082.66/28,447,903,750.44 = 7,019,216,681.10/x
  3. Step 3: Cross multiply
    18,978,650,082.66x = 28,447,903,750.44 × 7,019,216,681.10
  4. Step 4: Simplify right side
    18,978,650,082.66x = 199,682,000,547,415,687,168
  5. Step 5: Solve for x
    x = 199,682,000,547,415,687,168/18,978,650,082.66
  6. Step 6: Final answer
    x = 10,521,401,663.33

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