Finding the Fourth Proportional to 78,870.97, 118,117.85 and 45,489.83

Step by Step Solution

1. Step 1: Write the proportion equation
   78,870.97 : 118,117.85 = 45,489.83 : x
2. Step 2: Convert to fraction form
   78,870.97/118,117.85 = 45,489.83/x
3. Step 3: Cross multiply
   78,870.97x = 118,117.85 × 45,489.83
4. Step 4: Simplify right side
   78,870.97x = 5,373,160,916.47
5. Step 5: Solve for x
   x = 5,373,160,916.47/78,870.97
6. Step 6: Final answer
   x = 68,125.96