Finding the Fourth Proportional to 86,941.88, 130,334.58 and 31,499

Step by Step Solution

1. Step 1: Write the proportion equation
   86,941.88 : 130,334.58 = 31,499 : x
2. Step 2: Convert to fraction form
   86,941.88/130,334.58 = 31,499/x
3. Step 3: Cross multiply
   86,941.88x = 130,334.58 × 31,499
4. Step 4: Simplify right side
   86,941.88x = 4,105,408,935.42
5. Step 5: Solve for x
   x = 4,105,408,935.42/86,941.88
6. Step 6: Final answer
   x = 47,220.15