Finding the Fourth Proportional to 155,078.86, 214,055.24 and 90,565.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,078.86 : 214,055.24 = 90,565.50 : x
2. Step 2: Convert to fraction form
   155,078.86/214,055.24 = 90,565.50/x
3. Step 3: Cross multiply
   155,078.86x = 214,055.24 × 90,565.50
4. Step 4: Simplify right side
   155,078.86x = 19,386,019,838.22
5. Step 5: Solve for x
   x = 19,386,019,838.22/155,078.86
6. Step 6: Final answer
   x = 125,007.50