Finding the Fourth Proportional to 60,913.80, 91,419.42 and 58,969.80

Step by Step Solution

1. Step 1: Write the proportion equation
   60,913.80 : 91,419.42 = 58,969.80 : x
2. Step 2: Convert to fraction form
   60,913.80/91,419.42 = 58,969.80/x
3. Step 3: Cross multiply
   60,913.80x = 91,419.42 × 58,969.80
4. Step 4: Simplify right side
   60,913.80x = 5,390,984,913.52
5. Step 5: Solve for x
   x = 5,390,984,913.52/60,913.80
6. Step 6: Final answer
   x = 88,501.87