Finding the Fourth Proportional to 137,061.42, 189,146.07 and 80,473.74

Step by Step Solution

1. Step 1: Write the proportion equation
   137,061.42 : 189,146.07 = 80,473.74 : x
2. Step 2: Convert to fraction form
   137,061.42/189,146.07 = 80,473.74/x
3. Step 3: Cross multiply
   137,061.42x = 189,146.07 × 80,473.74
4. Step 4: Simplify right side
   137,061.42x = 15,221,291,659.20
5. Step 5: Solve for x
   x = 15,221,291,659.20/137,061.42
6. Step 6: Final answer
   x = 111,054.53