Finding the Fourth Proportional to 42,993,711.29, 64,426,793.96 and 31,578,358.61

Step by Step Solution

1. Step 1: Write the proportion equation
   42,993,711.29 : 64,426,793.96 = 31,578,358.61 : x
2. Step 2: Convert to fraction form
   42,993,711.29/64,426,793.96 = 31,578,358.61/x
3. Step 3: Cross multiply
   42,993,711.29x = 64,426,793.96 × 31,578,358.61
4. Step 4: Simplify right side
   42,993,711.29x = 2,034,492,403,439,328
5. Step 5: Solve for x
   x = 2,034,492,403,439,328/42,993,711.29
6. Step 6: Final answer
   x = 47,320,697.44