Finding the Fourth Proportional to 76,851.16, 106,049.59 and 42,393.81

Step by Step Solution

1. Step 1: Write the proportion equation
   76,851.16 : 106,049.59 = 42,393.81 : x
2. Step 2: Convert to fraction form
   76,851.16/106,049.59 = 42,393.81/x
3. Step 3: Cross multiply
   76,851.16x = 106,049.59 × 42,393.81
4. Step 4: Simplify right side
   76,851.16x = 4,495,846,460.74
5. Step 5: Solve for x
   x = 4,495,846,460.74/76,851.16
6. Step 6: Final answer
   x = 58,500.70