Finding the Fourth Proportional to 65,877.98, 91,064.83 and 58,778.26

Step by Step Solution

1. Step 1: Write the proportion equation
   65,877.98 : 91,064.83 = 58,778.26 : x
2. Step 2: Convert to fraction form
   65,877.98/91,064.83 = 58,778.26/x
3. Step 3: Cross multiply
   65,877.98x = 91,064.83 × 58,778.26
4. Step 4: Simplify right side
   65,877.98x = 5,352,632,411.63
5. Step 5: Solve for x
   x = 5,352,632,411.63/65,877.98
6. Step 6: Final answer
   x = 81,250.70