Finding the Fourth Proportional to 478,725.12, 718,085.52 and 123,708.96

Step by Step Solution

1. Step 1: Write the proportion equation
   478,725.12 : 718,085.52 = 123,708.96 : x
2. Step 2: Convert to fraction form
   478,725.12/718,085.52 = 123,708.96/x
3. Step 3: Cross multiply
   478,725.12x = 718,085.52 × 123,708.96
4. Step 4: Simplify right side
   478,725.12x = 88,833,612,870.26
5. Step 5: Solve for x
   x = 88,833,612,870.26/478,725.12
6. Step 6: Final answer
   x = 185,562.88