Finding the Fourth Proportional to 86,748.89, 130,124.25 and 30,578.52

Step by Step Solution

1. Step 1: Write the proportion equation
   86,748.89 : 130,124.25 = 30,578.52 : x
2. Step 2: Convert to fraction form
   86,748.89/130,124.25 = 30,578.52/x
3. Step 3: Cross multiply
   86,748.89x = 130,124.25 × 30,578.52
4. Step 4: Simplify right side
   86,748.89x = 3,979,006,981.11
5. Step 5: Solve for x
   x = 3,979,006,981.11/86,748.89
6. Step 6: Final answer
   x = 45,868.11