Finding the Fourth Proportional to 248,096,061.18, 342,366,306.66 and 136,585,789.05

Step by Step Solution

1. Step 1: Write the proportion equation
   248,096,061.18 : 342,366,306.66 = 136,585,789.05 : x
2. Step 2: Convert to fraction form
   248,096,061.18/342,366,306.66 = 136,585,789.05/x
3. Step 3: Cross multiply
   248,096,061.18x = 342,366,306.66 × 136,585,789.05
4. Step 4: Simplify right side
   248,096,061.18x = 46,762,372,139,290,376
5. Step 5: Solve for x
   x = 46,762,372,139,290,376/248,096,061.18
6. Step 6: Final answer
   x = 188,484,943.76