Finding the Fourth Proportional to 90,841.82, 136,223.84 and 31,659.98

Step by Step Solution

1. Step 1: Write the proportion equation
   90,841.82 : 136,223.84 = 31,659.98 : x
2. Step 2: Convert to fraction form
   90,841.82/136,223.84 = 31,659.98/x
3. Step 3: Cross multiply
   90,841.82x = 136,223.84 × 31,659.98
4. Step 4: Simplify right side
   90,841.82x = 4,312,844,049.92
5. Step 5: Solve for x
   x = 4,312,844,049.92/90,841.82
6. Step 6: Final answer
   x = 47,476.42