Finding the Fourth Proportional to 81,502.98, 112,489.83 and 53,159.46

Step by Step Solution

1. Step 1: Write the proportion equation
   81,502.98 : 112,489.83 = 53,159.46 : x
2. Step 2: Convert to fraction form
   81,502.98/112,489.83 = 53,159.46/x
3. Step 3: Cross multiply
   81,502.98x = 112,489.83 × 53,159.46
4. Step 4: Simplify right side
   81,502.98x = 5,979,898,618.29
5. Step 5: Solve for x
   x = 5,979,898,618.29/81,502.98
6. Step 6: Final answer
   x = 73,370.31