Finding the Fourth Proportional to 78,445.58, 108,254.90 and 42,635.59

Step by Step Solution

1. Step 1: Write the proportion equation
   78,445.58 : 108,254.90 = 42,635.59 : x
2. Step 2: Convert to fraction form
   78,445.58/108,254.90 = 42,635.59/x
3. Step 3: Cross multiply
   78,445.58x = 108,254.90 × 42,635.59
4. Step 4: Simplify right side
   78,445.58x = 4,615,511,367.84
5. Step 5: Solve for x
   x = 4,615,511,367.84/78,445.58
6. Step 6: Final answer
   x = 58,837.12