Finding the Fourth Proportional to 152,250.69, 228,157.61 and 85,550.58

Step by Step Solution

1. Step 1: Write the proportion equation
   152,250.69 : 228,157.61 = 85,550.58 : x
2. Step 2: Convert to fraction form
   152,250.69/228,157.61 = 85,550.58/x
3. Step 3: Cross multiply
   152,250.69x = 228,157.61 × 85,550.58
4. Step 4: Simplify right side
   152,250.69x = 19,519,015,920.38
5. Step 5: Solve for x
   x = 19,519,015,920.38/152,250.69
6. Step 6: Final answer
   x = 128,203.14