Finding the Fourth Proportional to 57,090.06, 85,524.27 and 42,069.92

Step by Step Solution

1. Step 1: Write the proportion equation
   57,090.06 : 85,524.27 = 42,069.92 : x
2. Step 2: Convert to fraction form
   57,090.06/85,524.27 = 42,069.92/x
3. Step 3: Cross multiply
   57,090.06x = 85,524.27 × 42,069.92
4. Step 4: Simplify right side
   57,090.06x = 3,597,999,196.96
5. Step 5: Solve for x
   x = 3,597,999,196.96/57,090.06
6. Step 6: Final answer
   x = 63,023.22