Finding the Fourth Proportional to 65,791, 98,731.88 and 57,017.08

Step by Step Solution

1. Step 1: Write the proportion equation
   65,791 : 98,731.88 = 57,017.08 : x
2. Step 2: Convert to fraction form
   65,791/98,731.88 = 57,017.08/x
3. Step 3: Cross multiply
   65,791x = 98,731.88 × 57,017.08
4. Step 4: Simplify right side
   65,791x = 5,629,403,500.51
5. Step 5: Solve for x
   x = 5,629,403,500.51/65,791
6. Step 6: Final answer
   x = 85,564.95