Finding the Fourth Proportional to 81,543.16, 122,381.16 and 42,111.82

Step by Step Solution

1. Step 1: Write the proportion equation
   81,543.16 : 122,381.16 = 42,111.82 : x
2. Step 2: Convert to fraction form
   81,543.16/122,381.16 = 42,111.82/x
3. Step 3: Cross multiply
   81,543.16x = 122,381.16 × 42,111.82
4. Step 4: Simplify right side
   81,543.16x = 5,153,693,381.31
5. Step 5: Solve for x
   x = 5,153,693,381.31/81,543.16
6. Step 6: Final answer
   x = 63,202.03