Finding the Fourth Proportional to 56,319.30, 77,752.98 and 42,057.77

Step by Step Solution

1. Step 1: Write the proportion equation
   56,319.30 : 77,752.98 = 42,057.77 : x
2. Step 2: Convert to fraction form
   56,319.30/77,752.98 = 42,057.77/x
3. Step 3: Cross multiply
   56,319.30x = 77,752.98 × 42,057.77
4. Step 4: Simplify right side
   56,319.30x = 3,270,116,560.89
5. Step 5: Solve for x
   x = 3,270,116,560.89/56,319.30
6. Step 6: Final answer
   x = 58,063.87