Finding the Fourth Proportional to 31,407.86, 43,381.32 and 23,485.34

Step by Step Solution

1. Step 1: Write the proportion equation
   31,407.86 : 43,381.32 = 23,485.34 : x
2. Step 2: Convert to fraction form
   31,407.86/43,381.32 = 23,485.34/x
3. Step 3: Cross multiply
   31,407.86x = 43,381.32 × 23,485.34
4. Step 4: Simplify right side
   31,407.86x = 1,018,825,049.85
5. Step 5: Solve for x
   x = 1,018,825,049.85/31,407.86
6. Step 6: Final answer
   x = 32,438.54