Finding the Fourth Proportional to 81,971.16, 113,111.82 and 60,472.59

Step by Step Solution

1. Step 1: Write the proportion equation
   81,971.16 : 113,111.82 = 60,472.59 : x
2. Step 2: Convert to fraction form
   81,971.16/113,111.82 = 60,472.59/x
3. Step 3: Cross multiply
   81,971.16x = 113,111.82 × 60,472.59
4. Step 4: Simplify right side
   81,971.16x = 6,840,164,715.01
5. Step 5: Solve for x
   x = 6,840,164,715.01/81,971.16
6. Step 6: Final answer
   x = 83,445.99