Finding the Fourth Proportional to 42,737,920.16, 64,112,867.76 and 13,986,315.68

Step by Step Solution

1. Step 1: Write the proportion equation
   42,737,920.16 : 64,112,867.76 = 13,986,315.68 : x
2. Step 2: Convert to fraction form
   42,737,920.16/64,112,867.76 = 13,986,315.68/x
3. Step 3: Cross multiply
   42,737,920.16x = 64,112,867.76 × 13,986,315.68
4. Step 4: Simplify right side
   42,737,920.16x = 896,702,807,641,454.38
5. Step 5: Solve for x
   x = 896,702,807,641,454.38/42,737,920.16
6. Step 6: Final answer
   x = 20,981,432.98