Finding the Fourth Proportional to 31,408,938.18, 47,126,390.76 and 13,892,285.61

Step by Step Solution

1. Step 1: Write the proportion equation
   31,408,938.18 : 47,126,390.76 = 13,892,285.61 : x
2. Step 2: Convert to fraction form
   31,408,938.18/47,126,390.76 = 13,892,285.61/x
3. Step 3: Cross multiply
   31,408,938.18x = 47,126,390.76 × 13,892,285.61
4. Step 4: Simplify right side
   31,408,938.18x = 654,693,280,206,384.88
5. Step 5: Solve for x
   x = 654,693,280,206,384.88/31,408,938.18
6. Step 6: Final answer
   x = 20,844,171.06