Finding the Fourth Proportional to 76,384, 105,410.64 and 42,850.72

Step by Step Solution

1. Step 1: Write the proportion equation
   76,384 : 105,410.64 = 42,850.72 : x
2. Step 2: Convert to fraction form
   76,384/105,410.64 = 42,850.72/x
3. Step 3: Cross multiply
   76,384x = 105,410.64 × 42,850.72
4. Step 4: Simplify right side
   76,384x = 4,516,921,819.66
5. Step 5: Solve for x
   x = 4,516,921,819.66/76,384
6. Step 6: Final answer
   x = 59,134.40