Finding the Fourth Proportional to 101,150,398.28, 139,587,721.20 and 54,740,688.50

Step by Step Solution

1. Step 1: Write the proportion equation
   101,150,398.28 : 139,587,721.20 = 54,740,688.50 : x
2. Step 2: Convert to fraction form
   101,150,398.28/139,587,721.20 = 54,740,688.50/x
3. Step 3: Cross multiply
   101,150,398.28x = 139,587,721.20 × 54,740,688.50
4. Step 4: Simplify right side
   101,150,398.28x = 7,641,127,963,936,107
5. Step 5: Solve for x
   x = 7,641,127,963,936,107/101,150,398.28
6. Step 6: Final answer
   x = 75,542,242.98