Finding the Fourth Proportional to 137,484.47, 189,725.15 and 80,120.07

Step by Step Solution

1. Step 1: Write the proportion equation
   137,484.47 : 189,725.15 = 80,120.07 : x
2. Step 2: Convert to fraction form
   137,484.47/189,725.15 = 80,120.07/x
3. Step 3: Cross multiply
   137,484.47x = 189,725.15 × 80,120.07
4. Step 4: Simplify right side
   137,484.47x = 15,200,792,499.06
5. Step 5: Solve for x
   x = 15,200,792,499.06/137,484.47
6. Step 6: Final answer
   x = 110,563.70