Finding the Fourth Proportional to 69,397.90, 104,081.27 and 31,921.98

Step by Step Solution

1. Step 1: Write the proportion equation
   69,397.90 : 104,081.27 = 31,921.98 : x
2. Step 2: Convert to fraction form
   69,397.90/104,081.27 = 31,921.98/x
3. Step 3: Cross multiply
   69,397.90x = 104,081.27 × 31,921.98
4. Step 4: Simplify right side
   69,397.90x = 3,322,479,698.91
5. Step 5: Solve for x
   x = 3,322,479,698.91/69,397.90
6. Step 6: Final answer
   x = 47,875.80