Finding the Fourth Proportional to 82,131.56, 122,889.72 and 58,493.72

Step by Step Solution

1. Step 1: Write the proportion equation
   82,131.56 : 122,889.72 = 58,493.72 : x
2. Step 2: Convert to fraction form
   82,131.56/122,889.72 = 58,493.72/x
3. Step 3: Cross multiply
   82,131.56x = 122,889.72 × 58,493.72
4. Step 4: Simplify right side
   82,131.56x = 7,188,276,872.56
5. Step 5: Solve for x
   x = 7,188,276,872.56/82,131.56
6. Step 6: Final answer
   x = 87,521.49