Finding the Fourth Proportional to 42,018.72, 57,985.07 and 22,898.65

Step by Step Solution

1. Step 1: Write the proportion equation
   42,018.72 : 57,985.07 = 22,898.65 : x
2. Step 2: Convert to fraction form
   42,018.72/57,985.07 = 22,898.65/x
3. Step 3: Cross multiply
   42,018.72x = 57,985.07 × 22,898.65
4. Step 4: Simplify right side
   42,018.72x = 1,327,779,672.42
5. Step 5: Solve for x
   x = 1,327,779,672.42/42,018.72
6. Step 6: Final answer
   x = 31,599.72