Finding the Fourth Proportional to 43,128.05, 59,516.78 and 25,219.76

Step by Step Solution

1. Step 1: Write the proportion equation
   43,128.05 : 59,516.78 = 25,219.76 : x
2. Step 2: Convert to fraction form
   43,128.05/59,516.78 = 25,219.76/x
3. Step 3: Cross multiply
   43,128.05x = 59,516.78 × 25,219.76
4. Step 4: Simplify right side
   43,128.05x = 1,500,998,483.89
5. Step 5: Solve for x
   x = 1,500,998,483.89/43,128.05
6. Step 6: Final answer
   x = 34,803.30