Finding the Fourth Proportional to 89,304.72, 133,961.19 and 30,140.92

Step by Step Solution

1. Step 1: Write the proportion equation
   89,304.72 : 133,961.19 = 30,140.92 : x
2. Step 2: Convert to fraction form
   89,304.72/133,961.19 = 30,140.92/x
3. Step 3: Cross multiply
   89,304.72x = 133,961.19 × 30,140.92
4. Step 4: Simplify right side
   89,304.72x = 4,037,713,510.89
5. Step 5: Solve for x
   x = 4,037,713,510.89/89,304.72
6. Step 6: Final answer
   x = 45,212.77