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Finding the Fourth Proportional to 101,403.75, 139,931.65 and 56,079.09

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Solution

The fourth proportional to 101,403.75, 139,931.65 and 56,079.09 is: 77,386.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,403.75 : 139,931.65 = 56,079.09 : x
  2. Step 2: Convert to fraction form
    101,403.75/139,931.65 = 56,079.09/x
  3. Step 3: Cross multiply
    101,403.75x = 139,931.65 × 56,079.09
  4. Step 4: Simplify right side
    101,403.75x = 7,847,239,594.20
  5. Step 5: Solve for x
    x = 7,847,239,594.20/101,403.75
  6. Step 6: Final answer
    x = 77,386.09

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