Finding the Fourth Proportional to 123,373.52, 170,248.84 and 72,379.28

Step by Step Solution

1. Step 1: Write the proportion equation
   123,373.52 : 170,248.84 = 72,379.28 : x
2. Step 2: Convert to fraction form
   123,373.52/170,248.84 = 72,379.28/x
3. Step 3: Cross multiply
   123,373.52x = 170,248.84 × 72,379.28
4. Step 4: Simplify right side
   123,373.52x = 12,322,488,460.04
5. Step 5: Solve for x
   x = 12,322,488,460.04/123,373.52
6. Step 6: Final answer
   x = 99,879.52