Finding the Fourth Proportional to 65,908.72, 98,821.18 and 55,916.91

Step by Step Solution

1. Step 1: Write the proportion equation
   65,908.72 : 98,821.18 = 55,916.91 : x
2. Step 2: Convert to fraction form
   65,908.72/98,821.18 = 55,916.91/x
3. Step 3: Cross multiply
   65,908.72x = 98,821.18 × 55,916.91
4. Step 4: Simplify right side
   65,908.72x = 5,525,775,028.15
5. Step 5: Solve for x
   x = 5,525,775,028.15/65,908.72
6. Step 6: Final answer
   x = 83,839.82