Finding the Fourth Proportional to 77,967.74, 107,595.42 and 42,157.73

Step by Step Solution

1. Step 1: Write the proportion equation
   77,967.74 : 107,595.42 = 42,157.73 : x
2. Step 2: Convert to fraction form
   77,967.74/107,595.42 = 42,157.73/x
3. Step 3: Cross multiply
   77,967.74x = 107,595.42 × 42,157.73
4. Step 4: Simplify right side
   77,967.74x = 4,535,978,665.60
5. Step 5: Solve for x
   x = 4,535,978,665.60/77,967.74
6. Step 6: Final answer
   x = 58,177.63