Finding the Fourth Proportional to 99,798,359.28, 137,856,532.56 and 75,204,450.56

Step by Step Solution

1. Step 1: Write the proportion equation
   99,798,359.28 : 137,856,532.56 = 75,204,450.56 : x
2. Step 2: Convert to fraction form
   99,798,359.28/137,856,532.56 = 75,204,450.56/x
3. Step 3: Cross multiply
   99,798,359.28x = 137,856,532.56 × 75,204,450.56
4. Step 4: Simplify right side
   99,798,359.28x = 10,367,424,787,281,550
5. Step 5: Solve for x
   x = 10,367,424,787,281,550/99,798,359.28
6. Step 6: Final answer
   x = 103,883,719.75