Finding the Fourth Proportional to 78,494.24, 108,322.56 and 42,684.64

Step by Step Solution

1. Step 1: Write the proportion equation
   78,494.24 : 108,322.56 = 42,684.64 : x
2. Step 2: Convert to fraction form
   78,494.24/108,322.56 = 42,684.64/x
3. Step 3: Cross multiply
   78,494.24x = 108,322.56 × 42,684.64
4. Step 4: Simplify right side
   78,494.24x = 4,623,709,477.48
5. Step 5: Solve for x
   x = 4,623,709,477.48/78,494.24
6. Step 6: Final answer
   x = 58,905.08