Finding the Fourth Proportional to 60,807.80, 91,017.30 and 43,311.80

Step by Step Solution

1. Step 1: Write the proportion equation
   60,807.80 : 91,017.30 = 43,311.80 : x
2. Step 2: Convert to fraction form
   60,807.80/91,017.30 = 43,311.80/x
3. Step 3: Cross multiply
   60,807.80x = 91,017.30 × 43,311.80
4. Step 4: Simplify right side
   60,807.80x = 3,942,123,094.14
5. Step 5: Solve for x
   x = 3,942,123,094.14/60,807.80
6. Step 6: Final answer
   x = 64,829.23