Finding the Fourth Proportional to 78,455.69, 108,269.11 and 42,645.84

Step by Step Solution

1. Step 1: Write the proportion equation
   78,455.69 : 108,269.11 = 42,645.84 : x
2. Step 2: Convert to fraction form
   78,455.69/108,269.11 = 42,645.84/x
3. Step 3: Cross multiply
   78,455.69x = 108,269.11 × 42,645.84
4. Step 4: Simplify right side
   78,455.69x = 4,617,227,158.43
5. Step 5: Solve for x
   x = 4,617,227,158.43/78,455.69
6. Step 6: Final answer
   x = 58,851.40