Finding the Fourth Proportional to 78,575.66, 108,436.71 and 42,767.99

Step by Step Solution

1. Step 1: Write the proportion equation
   78,575.66 : 108,436.71 = 42,767.99 : x
2. Step 2: Convert to fraction form
   78,575.66/108,436.71 = 42,767.99/x
3. Step 3: Cross multiply
   78,575.66x = 108,436.71 × 42,767.99
4. Step 4: Simplify right side
   78,575.66x = 4,637,620,128.91
5. Step 5: Solve for x
   x = 4,637,620,128.91/78,575.66
6. Step 6: Final answer
   x = 59,021.08