Finding the Fourth Proportional to 76,448.30, 105,502.15 and 42,456.94

Step by Step Solution

1. Step 1: Write the proportion equation
   76,448.30 : 105,502.15 = 42,456.94 : x
2. Step 2: Convert to fraction form
   76,448.30/105,502.15 = 42,456.94/x
3. Step 3: Cross multiply
   76,448.30x = 105,502.15 × 42,456.94
4. Step 4: Simplify right side
   76,448.30x = 4,479,298,452.42
5. Step 5: Solve for x
   x = 4,479,298,452.42/76,448.30
6. Step 6: Final answer
   x = 58,592.52