Finding the Fourth Proportional to 78,857.98, 108,807.72 and 45,317.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,857.98 : 108,807.72 = 45,317.50 : x
2. Step 2: Convert to fraction form
   78,857.98/108,807.72 = 45,317.50/x
3. Step 3: Cross multiply
   78,857.98x = 108,807.72 × 45,317.50
4. Step 4: Simplify right side
   78,857.98x = 4,930,893,851.10
5. Step 5: Solve for x
   x = 4,930,893,851.10/78,857.98
6. Step 6: Final answer
   x = 62,528.79