Finding the Fourth Proportional to 78,405.72, 108,196.82 and 42,594.92

Step by Step Solution

1. Step 1: Write the proportion equation
   78,405.72 : 108,196.82 = 42,594.92 : x
2. Step 2: Convert to fraction form
   78,405.72/108,196.82 = 42,594.92/x
3. Step 3: Cross multiply
   78,405.72x = 108,196.82 × 42,594.92
4. Step 4: Simplify right side
   78,405.72x = 4,608,634,892.15
5. Step 5: Solve for x
   x = 4,608,634,892.15/78,405.72
6. Step 6: Final answer
   x = 58,779.32