Finding the Fourth Proportional to 57,091.56, 85,526.52 and 42,071.42

Step by Step Solution

1. Step 1: Write the proportion equation
   57,091.56 : 85,526.52 = 42,071.42 : x
2. Step 2: Convert to fraction form
   57,091.56/85,526.52 = 42,071.42/x
3. Step 3: Cross multiply
   57,091.56x = 85,526.52 × 42,071.42
4. Step 4: Simplify right side
   57,091.56x = 3,598,222,144.06
5. Step 5: Solve for x
   x = 3,598,222,144.06/57,091.56
6. Step 6: Final answer
   x = 63,025.47