Finding the Fourth Proportional to 112,139.22, 168,018.41 and 67,672.53

Step by Step Solution

1. Step 1: Write the proportion equation
   112,139.22 : 168,018.41 = 67,672.53 : x
2. Step 2: Convert to fraction form
   112,139.22/168,018.41 = 67,672.53/x
3. Step 3: Cross multiply
   112,139.22x = 168,018.41 × 67,672.53
4. Step 4: Simplify right side
   112,139.22x = 11,370,231,311.32
5. Step 5: Solve for x
   x = 11,370,231,311.32/112,139.22
6. Step 6: Final answer
   x = 101,393.89