Finding the Fourth Proportional to 86,274.79, 129,443.32 and 30,123.17

Step by Step Solution

1. Step 1: Write the proportion equation
   86,274.79 : 129,443.32 = 30,123.17 : x
2. Step 2: Convert to fraction form
   86,274.79/129,443.32 = 30,123.17/x
3. Step 3: Cross multiply
   86,274.79x = 129,443.32 × 30,123.17
4. Step 4: Simplify right side
   86,274.79x = 3,899,243,209.03
5. Step 5: Solve for x
   x = 3,899,243,209.03/86,274.79
6. Step 6: Final answer
   x = 45,195.63