Finding the Fourth Proportional to 154,978.04, 232,492.76 and 55,117.20

Step by Step Solution

1. Step 1: Write the proportion equation
   154,978.04 : 232,492.76 = 55,117.20 : x
2. Step 2: Convert to fraction form
   154,978.04/232,492.76 = 55,117.20/x
3. Step 3: Cross multiply
   154,978.04x = 232,492.76 × 55,117.20
4. Step 4: Simplify right side
   154,978.04x = 12,814,349,951.47
5. Step 5: Solve for x
   x = 12,814,349,951.47/154,978.04
6. Step 6: Final answer
   x = 82,684.94