Finding the Fourth Proportional to 31,142,287.97, 42,977,663.11 and 17,911,468.55

Step by Step Solution

1. Step 1: Write the proportion equation
   31,142,287.97 : 42,977,663.11 = 17,911,468.55 : x
2. Step 2: Convert to fraction form
   31,142,287.97/42,977,663.11 = 17,911,468.55/x
3. Step 3: Cross multiply
   31,142,287.97x = 42,977,663.11 × 17,911,468.55
4. Step 4: Simplify right side
   31,142,287.97x = 769,793,061,128,552.25
5. Step 5: Solve for x
   x = 769,793,061,128,552.25/31,142,287.97
6. Step 6: Final answer
   x = 24,718,577.58