Finding the Fourth Proportional to 101,231,259.28, 139,698,407.60 and 54,820,436.56

Step by Step Solution

1. Step 1: Write the proportion equation
   101,231,259.28 : 139,698,407.60 = 54,820,436.56 : x
2. Step 2: Convert to fraction form
   101,231,259.28/139,698,407.60 = 54,820,436.56/x
3. Step 3: Cross multiply
   101,231,259.28x = 139,698,407.60 × 54,820,436.56
4. Step 4: Simplify right side
   101,231,259.28x = 7,658,327,691,368,822
5. Step 5: Solve for x
   x = 7,658,327,691,368,822/101,231,259.28
6. Step 6: Final answer
   x = 75,651,807.02