Finding the Fourth Proportional to 78,558.42, 108,412.92 and 42,750.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,558.42 : 108,412.92 = 42,750.76 : x
2. Step 2: Convert to fraction form
   78,558.42/108,412.92 = 42,750.76/x
3. Step 3: Cross multiply
   78,558.42x = 108,412.92 × 42,750.76
4. Step 4: Simplify right side
   78,558.42x = 4,634,734,723.82
5. Step 5: Solve for x
   x = 4,634,734,723.82/78,558.42
6. Step 6: Final answer
   x = 58,997.30