Finding the Fourth Proportional to 78,442.20, 117,669.42 and 47,066.04

Step by Step Solution

1. Step 1: Write the proportion equation
   78,442.20 : 117,669.42 = 47,066.04 : x
2. Step 2: Convert to fraction form
   78,442.20/117,669.42 = 47,066.04/x
3. Step 3: Cross multiply
   78,442.20x = 117,669.42 × 47,066.04
4. Step 4: Simplify right side
   78,442.20x = 5,538,233,628.50
5. Step 5: Solve for x
   x = 5,538,233,628.50/78,442.20
6. Step 6: Final answer
   x = 70,602.73