Finding the Fourth Proportional to 92,399.72, 138,585.18 and 30,069.80

Step by Step Solution

1. Step 1: Write the proportion equation
   92,399.72 : 138,585.18 = 30,069.80 : x
2. Step 2: Convert to fraction form
   92,399.72/138,585.18 = 30,069.80/x
3. Step 3: Cross multiply
   92,399.72x = 138,585.18 × 30,069.80
4. Step 4: Simplify right side
   92,399.72x = 4,167,228,645.56
5. Step 5: Solve for x
   x = 4,167,228,645.56/92,399.72
6. Step 6: Final answer
   x = 45,100.01