Finding the Fourth Proportional to 153,003.72, 229,544.48 and 89,877.20

Step by Step Solution

1. Step 1: Write the proportion equation
   153,003.72 : 229,544.48 = 89,877.20 : x
2. Step 2: Convert to fraction form
   153,003.72/229,544.48 = 89,877.20/x
3. Step 3: Cross multiply
   153,003.72x = 229,544.48 × 89,877.20
4. Step 4: Simplify right side
   153,003.72x = 20,630,815,137.86
5. Step 5: Solve for x
   x = 20,630,815,137.86/153,003.72
6. Step 6: Final answer
   x = 134,838.65