Finding the Fourth Proportional to 56,727.53, 85,129.56 and 42,697.92

Step by Step Solution

1. Step 1: Write the proportion equation
   56,727.53 : 85,129.56 = 42,697.92 : x
2. Step 2: Convert to fraction form
   56,727.53/85,129.56 = 42,697.92/x
3. Step 3: Cross multiply
   56,727.53x = 85,129.56 × 42,697.92
4. Step 4: Simplify right side
   56,727.53x = 3,634,855,142.52
5. Step 5: Solve for x
   x = 3,634,855,142.52/56,727.53
6. Step 6: Final answer
   x = 64,075.69