Finding the Fourth Proportional to 42,895.34, 64,335.81 and 11,725.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,895.34 : 64,335.81 = 11,725.10 : x
2. Step 2: Convert to fraction form
   42,895.34/64,335.81 = 11,725.10/x
3. Step 3: Cross multiply
   42,895.34x = 64,335.81 × 11,725.10
4. Step 4: Simplify right side
   42,895.34x = 754,343,805.83
5. Step 5: Solve for x
   x = 754,343,805.83/42,895.34
6. Step 6: Final answer
   x = 17,585.68