Finding the Fourth Proportional to 158,113,720.74, 218,165,926.87 and 99,342,334.10

Step by Step Solution

1. Step 1: Write the proportion equation
   158,113,720.74 : 218,165,926.87 = 99,342,334.10 : x
2. Step 2: Convert to fraction form
   158,113,720.74/218,165,926.87 = 99,342,334.10/x
3. Step 3: Cross multiply
   158,113,720.74x = 218,165,926.87 × 99,342,334.10
4. Step 4: Simplify right side
   158,113,720.74x = 21,673,112,397,025,300
5. Step 5: Solve for x
   x = 21,673,112,397,025,300/158,113,720.74
6. Step 6: Final answer
   x = 137,072,938.99