Finding the Fourth Proportional to 478,743.47, 718,139.81 and 123,760.56

Step by Step Solution

1. Step 1: Write the proportion equation
   478,743.47 : 718,139.81 = 123,760.56 : x
2. Step 2: Convert to fraction form
   478,743.47/718,139.81 = 123,760.56/x
3. Step 3: Cross multiply
   478,743.47x = 718,139.81 × 123,760.56
4. Step 4: Simplify right side
   478,743.47x = 88,877,385,043.89
5. Step 5: Solve for x
   x = 88,877,385,043.89/478,743.47
6. Step 6: Final answer
   x = 185,647.20