Finding the Fourth Proportional to 116,573.76, 160,920.54 and 78,869.88

Step by Step Solution

1. Step 1: Write the proportion equation
   116,573.76 : 160,920.54 = 78,869.88 : x
2. Step 2: Convert to fraction form
   116,573.76/160,920.54 = 78,869.88/x
3. Step 3: Cross multiply
   116,573.76x = 160,920.54 × 78,869.88
4. Step 4: Simplify right side
   116,573.76x = 12,691,783,679.34
5. Step 5: Solve for x
   x = 12,691,783,679.34/116,573.76
6. Step 6: Final answer
   x = 108,873.42