Finding the Fourth Proportional to 98,981,142.15, 138,860,577.15 and 98,981,142.15

Step by Step Solution

1. Step 1: Write the proportion equation
   98,981,142.15 : 138,860,577.15 = 98,981,142.15 : x
2. Step 2: Convert to fraction form
   98,981,142.15/138,860,577.15 = 98,981,142.15/x
3. Step 3: Cross multiply
   98,981,142.15x = 138,860,577.15 × 98,981,142.15
4. Step 4: Simplify right side
   98,981,142.15x = 13,744,578,525,915,194
5. Step 5: Solve for x
   x = 13,744,578,525,915,194/98,981,142.15
6. Step 6: Final answer
   x = 138,860,577.15