Finding the Fourth Proportional to 51,631.56, 71,293.57 and 42,072.89

Step by Step Solution

1. Step 1: Write the proportion equation
   51,631.56 : 71,293.57 = 42,072.89 : x
2. Step 2: Convert to fraction form
   51,631.56/71,293.57 = 42,072.89/x
3. Step 3: Cross multiply
   51,631.56x = 71,293.57 × 42,072.89
4. Step 4: Simplify right side
   51,631.56x = 2,999,526,066.67
5. Step 5: Solve for x
   x = 2,999,526,066.67/51,631.56
6. Step 6: Final answer
   x = 58,094.82