Finding the Fourth Proportional to 91,098.35, 136,643.60 and 31,132.18

Step by Step Solution

1. Step 1: Write the proportion equation
   91,098.35 : 136,643.60 = 31,132.18 : x
2. Step 2: Convert to fraction form
   91,098.35/136,643.60 = 31,132.18/x
3. Step 3: Cross multiply
   91,098.35x = 136,643.60 × 31,132.18
4. Step 4: Simplify right side
   91,098.35x = 4,254,012,995.39
5. Step 5: Solve for x
   x = 4,254,012,995.39/91,098.35
6. Step 6: Final answer
   x = 46,696.93