Finding the Fourth Proportional to 91,002.66, 136,510.89 and 31,012.48

Step by Step Solution

1. Step 1: Write the proportion equation
   91,002.66 : 136,510.89 = 31,012.48 : x
2. Step 2: Convert to fraction form
   91,002.66/136,510.89 = 31,012.48/x
3. Step 3: Cross multiply
   91,002.66x = 136,510.89 × 31,012.48
4. Step 4: Simplify right side
   91,002.66x = 4,233,541,300.25
5. Step 5: Solve for x
   x = 4,233,541,300.25/91,002.66
6. Step 6: Final answer
   x = 46,521.07