Finding the Fourth Proportional to 114,294.78, 171,440.30 and 31,188.78

Step by Step Solution

1. Step 1: Write the proportion equation
   114,294.78 : 171,440.30 = 31,188.78 : x
2. Step 2: Convert to fraction form
   114,294.78/171,440.30 = 31,188.78/x
3. Step 3: Cross multiply
   114,294.78x = 171,440.30 × 31,188.78
4. Step 4: Simplify right side
   114,294.78x = 5,347,013,799.83
5. Step 5: Solve for x
   x = 5,347,013,799.83/114,294.78
6. Step 6: Final answer
   x = 46,782.66