Finding the Fourth Proportional to 76,458.28, 105,510.72 and 42,464.86

Step by Step Solution

1. Step 1: Write the proportion equation
   76,458.28 : 105,510.72 = 42,464.86 : x
2. Step 2: Convert to fraction form
   76,458.28/105,510.72 = 42,464.86/x
3. Step 3: Cross multiply
   76,458.28x = 105,510.72 × 42,464.86
4. Step 4: Simplify right side
   76,458.28x = 4,480,497,953.30
5. Step 5: Solve for x
   x = 4,480,497,953.30/76,458.28
6. Step 6: Final answer
   x = 58,600.56