Finding the Fourth Proportional to 50,312.52, 69,390.06 and 31,179

Step by Step Solution

1. Step 1: Write the proportion equation
   50,312.52 : 69,390.06 = 31,179 : x
2. Step 2: Convert to fraction form
   50,312.52/69,390.06 = 31,179/x
3. Step 3: Cross multiply
   50,312.52x = 69,390.06 × 31,179
4. Step 4: Simplify right side
   50,312.52x = 2,163,512,680.74
5. Step 5: Solve for x
   x = 2,163,512,680.74/50,312.52
6. Step 6: Final answer
   x = 43,001.48