Finding the Fourth Proportional to 81,061.72, 121,587.99 and 21,892.93

Step by Step Solution

1. Step 1: Write the proportion equation
   81,061.72 : 121,587.99 = 21,892.93 : x
2. Step 2: Convert to fraction form
   81,061.72/121,587.99 = 21,892.93/x
3. Step 3: Cross multiply
   81,061.72x = 121,587.99 × 21,892.93
4. Step 4: Simplify right side
   81,061.72x = 2,661,917,353.91
5. Step 5: Solve for x
   x = 2,661,917,353.91/81,061.72
6. Step 6: Final answer
   x = 32,838.16