Finding the Fourth Proportional to 42,020.86, 57,988.79 and 22,900.64

Step by Step Solution

1. Step 1: Write the proportion equation
   42,020.86 : 57,988.79 = 22,900.64 : x
2. Step 2: Convert to fraction form
   42,020.86/57,988.79 = 22,900.64/x
3. Step 3: Cross multiply
   42,020.86x = 57,988.79 × 22,900.64
4. Step 4: Simplify right side
   42,020.86x = 1,327,980,403.83
5. Step 5: Solve for x
   x = 1,327,980,403.83/42,020.86
6. Step 6: Final answer
   x = 31,602.88