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Finding the Fourth Proportional to 99,711.93, 137,602.59 and 57,278.67

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Solution

The fourth proportional to 99,711.93, 137,602.59 and 57,278.67 is: 79,044.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,711.93 : 137,602.59 = 57,278.67 : x
  2. Step 2: Convert to fraction form
    99,711.93/137,602.59 = 57,278.67/x
  3. Step 3: Cross multiply
    99,711.93x = 137,602.59 × 57,278.67
  4. Step 4: Simplify right side
    99,711.93x = 7,881,693,343.76
  5. Step 5: Solve for x
    x = 7,881,693,343.76/99,711.93
  6. Step 6: Final answer
    x = 79,044.64

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