Finding the Fourth Proportional to 73,812.60, 110,757.78 and 42,669.72

Step by Step Solution

1. Step 1: Write the proportion equation
   73,812.60 : 110,757.78 = 42,669.72 : x
2. Step 2: Convert to fraction form
   73,812.60/110,757.78 = 42,669.72/x
3. Step 3: Cross multiply
   73,812.60x = 110,757.78 × 42,669.72
4. Step 4: Simplify right side
   73,812.60x = 4,726,003,460.42
5. Step 5: Solve for x
   x = 4,726,003,460.42/73,812.60
6. Step 6: Final answer
   x = 64,027.06