Finding the Fourth Proportional to 65,787, 98,725.86 and 57,013.08

Step by Step Solution

1. Step 1: Write the proportion equation
   65,787 : 98,725.86 = 57,013.08 : x
2. Step 2: Convert to fraction form
   65,787/98,725.86 = 57,013.08/x
3. Step 3: Cross multiply
   65,787x = 98,725.86 × 57,013.08
4. Step 4: Simplify right side
   65,787x = 5,628,665,354.25
5. Step 5: Solve for x
   x = 5,628,665,354.25/65,787
6. Step 6: Final answer
   x = 85,558.93