Finding the Fourth Proportional to 78,617.98, 108,480.60 and 45,077.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,617.98 : 108,480.60 = 45,077.50 : x
2. Step 2: Convert to fraction form
   78,617.98/108,480.60 = 45,077.50/x
3. Step 3: Cross multiply
   78,617.98x = 108,480.60 × 45,077.50
4. Step 4: Simplify right side
   78,617.98x = 4,890,034,246.50
5. Step 5: Solve for x
   x = 4,890,034,246.50/78,617.98
6. Step 6: Final answer
   x = 62,199.95