Finding the Fourth Proportional to 118,719.76, 178,108.72 and 54,647.92

Step by Step Solution

1. Step 1: Write the proportion equation
   118,719.76 : 178,108.72 = 54,647.92 : x
2. Step 2: Convert to fraction form
   118,719.76/178,108.72 = 54,647.92/x
3. Step 3: Cross multiply
   118,719.76x = 178,108.72 × 54,647.92
4. Step 4: Simplify right side
   118,719.76x = 9,733,271,081.86
5. Step 5: Solve for x
   x = 9,733,271,081.86/118,719.76
6. Step 6: Final answer
   x = 81,985.27