Finding the Fourth Proportional to 76,111.02, 105,029.46 and 42,118.88

Step by Step Solution

1. Step 1: Write the proportion equation
   76,111.02 : 105,029.46 = 42,118.88 : x
2. Step 2: Convert to fraction form
   76,111.02/105,029.46 = 42,118.88/x
3. Step 3: Cross multiply
   76,111.02x = 105,029.46 × 42,118.88
4. Step 4: Simplify right side
   76,111.02x = 4,423,722,697.06
5. Step 5: Solve for x
   x = 4,423,722,697.06/76,111.02
6. Step 6: Final answer
   x = 58,121.97