Finding the Fourth Proportional to 131,382,875.80, 181,300,578.42 and 72,640,930.60

Step by Step Solution

1. Step 1: Write the proportion equation
   131,382,875.80 : 181,300,578.42 = 72,640,930.60 : x
2. Step 2: Convert to fraction form
   131,382,875.80/181,300,578.42 = 72,640,930.60/x
3. Step 3: Cross multiply
   131,382,875.80x = 181,300,578.42 × 72,640,930.60
4. Step 4: Simplify right side
   131,382,875.80x = 13,169,842,734,747,076
5. Step 5: Solve for x
   x = 13,169,842,734,747,076/131,382,875.80
6. Step 6: Final answer
   x = 100,240,177.07