Finding the Fourth Proportional to 81,919,062.83, 122,877,753.18 and 47,353,470.72

Step by Step Solution

1. Step 1: Write the proportion equation
   81,919,062.83 : 122,877,753.18 = 47,353,470.72 : x
2. Step 2: Convert to fraction form
   81,919,062.83/122,877,753.18 = 47,353,470.72/x
3. Step 3: Cross multiply
   81,919,062.83x = 122,877,753.18 × 47,353,470.72
4. Step 4: Simplify right side
   81,919,062.83x = 5,818,688,087,348,517
5. Step 5: Solve for x
   x = 5,818,688,087,348,517/81,919,062.83
6. Step 6: Final answer
   x = 71,029,719.90