Finding the Fourth Proportional to 56,790.72, 85,161.78 and 25,200.72

Step by Step Solution

1. Step 1: Write the proportion equation
   56,790.72 : 85,161.78 = 25,200.72 : x
2. Step 2: Convert to fraction form
   56,790.72/85,161.78 = 25,200.72/x
3. Step 3: Cross multiply
   56,790.72x = 85,161.78 × 25,200.72
4. Step 4: Simplify right side
   56,790.72x = 2,146,138,172.48
5. Step 5: Solve for x
   x = 2,146,138,172.48/56,790.72
6. Step 6: Final answer
   x = 37,790.30