Finding the Fourth Proportional to 69,615.27, 104,186.34 and 42,978.24

Step by Step Solution

1. Step 1: Write the proportion equation
   69,615.27 : 104,186.34 = 42,978.24 : x
2. Step 2: Convert to fraction form
   69,615.27/104,186.34 = 42,978.24/x
3. Step 3: Cross multiply
   69,615.27x = 104,186.34 × 42,978.24
4. Step 4: Simplify right side
   69,615.27x = 4,477,745,525.24
5. Step 5: Solve for x
   x = 4,477,745,525.24/69,615.27
6. Step 6: Final answer
   x = 64,321.31