Finding the Fourth Proportional to 60,807.30, 91,016.55 and 43,311.30

Step by Step Solution

1. Step 1: Write the proportion equation
   60,807.30 : 91,016.55 = 43,311.30 : x
2. Step 2: Convert to fraction form
   60,807.30/91,016.55 = 43,311.30/x
3. Step 3: Cross multiply
   60,807.30x = 91,016.55 × 43,311.30
4. Step 4: Simplify right side
   60,807.30x = 3,942,045,102.02
5. Step 5: Solve for x
   x = 3,942,045,102.02/60,807.30
6. Step 6: Final answer
   x = 64,828.48