Finding the Fourth Proportional to 60,815.59, 91,217.82 and 43,122.16

Step by Step Solution

1. Step 1: Write the proportion equation
   60,815.59 : 91,217.82 = 43,122.16 : x
2. Step 2: Convert to fraction form
   60,815.59/91,217.82 = 43,122.16/x
3. Step 3: Cross multiply
   60,815.59x = 91,217.82 × 43,122.16
4. Step 4: Simplify right side
   60,815.59x = 3,933,509,428.89
5. Step 5: Solve for x
   x = 3,933,509,428.89/60,815.59
6. Step 6: Final answer
   x = 64,679.29