Finding the Fourth Proportional to 78,602.72, 108,473.70 and 42,794.70

Step by Step Solution

1. Step 1: Write the proportion equation
   78,602.72 : 108,473.70 = 42,794.70 : x
2. Step 2: Convert to fraction form
   78,602.72/108,473.70 = 42,794.70/x
3. Step 3: Cross multiply
   78,602.72x = 108,473.70 × 42,794.70
4. Step 4: Simplify right side
   78,602.72x = 4,642,099,014.01
5. Step 5: Solve for x
   x = 4,642,099,014.01/78,602.72
6. Step 6: Final answer
   x = 59,057.74