Finding the Fourth Proportional to 112,189.03, 168,143.42 and 72,101.32

Step by Step Solution

1. Step 1: Write the proportion equation
   112,189.03 : 168,143.42 = 72,101.32 : x
2. Step 2: Convert to fraction form
   112,189.03/168,143.42 = 72,101.32/x
3. Step 3: Cross multiply
   112,189.03x = 168,143.42 × 72,101.32
4. Step 4: Simplify right side
   112,189.03x = 12,123,362,531.31
5. Step 5: Solve for x
   x = 12,123,362,531.31/112,189.03
6. Step 6: Final answer
   x = 108,061.92