Finding the Fourth Proportional to 111,340.98, 166,978.80 and 31,373.63

Step by Step Solution

1. Step 1: Write the proportion equation
   111,340.98 : 166,978.80 = 31,373.63 : x
2. Step 2: Convert to fraction form
   111,340.98/166,978.80 = 31,373.63/x
3. Step 3: Cross multiply
   111,340.98x = 166,978.80 × 31,373.63
4. Step 4: Simplify right side
   111,340.98x = 5,238,730,254.15
5. Step 5: Solve for x
   x = 5,238,730,254.15/111,340.98
6. Step 6: Final answer
   x = 47,051.23