Finding the Fourth Proportional to 86,275.04, 129,443.70 and 30,123.42

Step by Step Solution

1. Step 1: Write the proportion equation
   86,275.04 : 129,443.70 = 30,123.42 : x
2. Step 2: Convert to fraction form
   86,275.04/129,443.70 = 30,123.42/x
3. Step 3: Cross multiply
   86,275.04x = 129,443.70 × 30,123.42
4. Step 4: Simplify right side
   86,275.04x = 3,899,286,941.45
5. Step 5: Solve for x
   x = 3,899,286,941.45/86,275.04
6. Step 6: Final answer
   x = 45,196.00