Finding the Fourth Proportional to 130,752.15, 196,128.22 and 91,386.15

Step by Step Solution

1. Step 1: Write the proportion equation
   130,752.15 : 196,128.22 = 91,386.15 : x
2. Step 2: Convert to fraction form
   130,752.15/196,128.22 = 91,386.15/x
3. Step 3: Cross multiply
   130,752.15x = 196,128.22 × 91,386.15
4. Step 4: Simplify right side
   130,752.15x = 17,923,402,932.15
5. Step 5: Solve for x
   x = 17,923,402,932.15/130,752.15
6. Step 6: Final answer
   x = 137,079.22