Finding the Fourth Proportional to 81,931.56, 122,896.53 and 37,545.72

Step by Step Solution

1. Step 1: Write the proportion equation
   81,931.56 : 122,896.53 = 37,545.72 : x
2. Step 2: Convert to fraction form
   81,931.56/122,896.53 = 37,545.72/x
3. Step 3: Cross multiply
   81,931.56x = 122,896.53 × 37,545.72
4. Step 4: Simplify right side
   81,931.56x = 4,614,238,704.35
5. Step 5: Solve for x
   x = 4,614,238,704.35/81,931.56
6. Step 6: Final answer
   x = 56,318.21