Finding the Fourth Proportional to 78,635.71, 108,513.90 and 42,825.81

Step by Step Solution

1. Step 1: Write the proportion equation
   78,635.71 : 108,513.90 = 42,825.81 : x
2. Step 2: Convert to fraction form
   78,635.71/108,513.90 = 42,825.81/x
3. Step 3: Cross multiply
   78,635.71x = 108,513.90 × 42,825.81
4. Step 4: Simplify right side
   78,635.71x = 4,647,195,663.76
5. Step 5: Solve for x
   x = 4,647,195,663.76/78,635.71
6. Step 6: Final answer
   x = 59,097.78