Finding the Fourth Proportional to 81,470.31, 112,428.76 and 47,498.91

Step by Step Solution

1. Step 1: Write the proportion equation
   81,470.31 : 112,428.76 = 47,498.91 : x
2. Step 2: Convert to fraction form
   81,470.31/112,428.76 = 47,498.91/x
3. Step 3: Cross multiply
   81,470.31x = 112,428.76 × 47,498.91
4. Step 4: Simplify right side
   81,470.31x = 5,340,243,552.65
5. Step 5: Solve for x
   x = 5,340,243,552.65/81,470.31
6. Step 6: Final answer
   x = 65,548.34