Finding the Fourth Proportional to 76,385.07, 105,411.39 and 42,851.07

Step by Step Solution

1. Step 1: Write the proportion equation
   76,385.07 : 105,411.39 = 42,851.07 : x
2. Step 2: Convert to fraction form
   76,385.07/105,411.39 = 42,851.07/x
3. Step 3: Cross multiply
   76,385.07x = 105,411.39 × 42,851.07
4. Step 4: Simplify right side
   76,385.07x = 4,516,990,851.69
5. Step 5: Solve for x
   x = 4,516,990,851.69/76,385.07
6. Step 6: Final answer
   x = 59,134.47