Finding the Fourth Proportional to 55,761.12, 77,038.56 and 42,377.76

Step by Step Solution

1. Step 1: Write the proportion equation
   55,761.12 : 77,038.56 = 42,377.76 : x
2. Step 2: Convert to fraction form
   55,761.12/77,038.56 = 42,377.76/x
3. Step 3: Cross multiply
   55,761.12x = 77,038.56 × 42,377.76
4. Step 4: Simplify right side
   55,761.12x = 3,264,721,606.43
5. Step 5: Solve for x
   x = 3,264,721,606.43/55,761.12
6. Step 6: Final answer
   x = 58,548.35