Finding the Fourth Proportional to 52,507.24, 78,671.76 and 31,687

Step by Step Solution

1. Step 1: Write the proportion equation
   52,507.24 : 78,671.76 = 31,687 : x
2. Step 2: Convert to fraction form
   52,507.24/78,671.76 = 31,687/x
3. Step 3: Cross multiply
   52,507.24x = 78,671.76 × 31,687
4. Step 4: Simplify right side
   52,507.24x = 2,492,872,059.12
5. Step 5: Solve for x
   x = 2,492,872,059.12/52,507.24
6. Step 6: Final answer
   x = 47,476.73