Finding the Fourth Proportional to 127,499.36, 190,875.18 and 89,416.64

Step by Step Solution

1. Step 1: Write the proportion equation
   127,499.36 : 190,875.18 = 89,416.64 : x
2. Step 2: Convert to fraction form
   127,499.36/190,875.18 = 89,416.64/x
3. Step 3: Cross multiply
   127,499.36x = 190,875.18 × 89,416.64
4. Step 4: Simplify right side
   127,499.36x = 17,067,417,255.00
5. Step 5: Solve for x
   x = 17,067,417,255.00/127,499.36
6. Step 6: Final answer
   x = 133,862.77