Finding the Fourth Proportional to 248,839.32, 373,300.02 and 91,288.92

Step by Step Solution

1. Step 1: Write the proportion equation
   248,839.32 : 373,300.02 = 91,288.92 : x
2. Step 2: Convert to fraction form
   248,839.32/373,300.02 = 91,288.92/x
3. Step 3: Cross multiply
   248,839.32x = 373,300.02 × 91,288.92
4. Step 4: Simplify right side
   248,839.32x = 34,078,155,661.78
5. Step 5: Solve for x
   x = 34,078,155,661.78/248,839.32
6. Step 6: Final answer
   x = 136,948.44