Finding the Fourth Proportional to 47,886.07, 71,853.71 and 21,250.31

Step by Step Solution

1. Step 1: Write the proportion equation
   47,886.07 : 71,853.71 = 21,250.31 : x
2. Step 2: Convert to fraction form
   47,886.07/71,853.71 = 21,250.31/x
3. Step 3: Cross multiply
   47,886.07x = 71,853.71 × 21,250.31
4. Step 4: Simplify right side
   47,886.07x = 1,526,913,612.15
5. Step 5: Solve for x
   x = 1,526,913,612.15/47,886.07
6. Step 6: Final answer
   x = 31,886.38