Finding the Fourth Proportional to 57,054.32, 78,687.16 and 42,747.76

Step by Step Solution

1. Step 1: Write the proportion equation
   57,054.32 : 78,687.16 = 42,747.76 : x
2. Step 2: Convert to fraction form
   57,054.32/78,687.16 = 42,747.76/x
3. Step 3: Cross multiply
   57,054.32x = 78,687.16 × 42,747.76
4. Step 4: Simplify right side
   57,054.32x = 3,363,699,830.76
5. Step 5: Solve for x
   x = 3,363,699,830.76/57,054.32
6. Step 6: Final answer
   x = 58,956.09