Finding the Fourth Proportional to 123,260, 170,098.80 and 78,573.92

Step by Step Solution

1. Step 1: Write the proportion equation
   123,260 : 170,098.80 = 78,573.92 : x
2. Step 2: Convert to fraction form
   123,260/170,098.80 = 78,573.92/x
3. Step 3: Cross multiply
   123,260x = 170,098.80 × 78,573.92
4. Step 4: Simplify right side
   123,260x = 13,365,329,503.30
5. Step 5: Solve for x
   x = 13,365,329,503.30/123,260
6. Step 6: Final answer
   x = 108,432.01