Finding the Fourth Proportional to 31,136,966.52, 42,969,012.18 and 16,815,388.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,136,966.52 : 42,969,012.18 = 16,815,388.50 : x
2. Step 2: Convert to fraction form
   31,136,966.52/42,969,012.18 = 16,815,388.50/x
3. Step 3: Cross multiply
   31,136,966.52x = 42,969,012.18 × 16,815,388.50
4. Step 4: Simplify right side
   31,136,966.52x = 722,540,633,267,931.88
5. Step 5: Solve for x
   x = 722,540,633,267,931.88/31,136,966.52
6. Step 6: Final answer
   x = 23,205,235.26