Finding the Fourth Proportional to 76,103.86, 105,023.46 and 42,113.78

Step by Step Solution

1. Step 1: Write the proportion equation
   76,103.86 : 105,023.46 = 42,113.78 : x
2. Step 2: Convert to fraction form
   76,103.86/105,023.46 = 42,113.78/x
3. Step 3: Cross multiply
   76,103.86x = 105,023.46 × 42,113.78
4. Step 4: Simplify right side
   76,103.86x = 4,422,934,889.28
5. Step 5: Solve for x
   x = 4,422,934,889.28/76,103.86
6. Step 6: Final answer
   x = 58,117.09