Finding the Fourth Proportional to 78,434.12, 108,240.71 and 42,626.45

Step by Step Solution

1. Step 1: Write the proportion equation
   78,434.12 : 108,240.71 = 42,626.45 : x
2. Step 2: Convert to fraction form
   78,434.12/108,240.71 = 42,626.45/x
3. Step 3: Cross multiply
   78,434.12x = 108,240.71 × 42,626.45
4. Step 4: Simplify right side
   78,434.12x = 4,613,917,270.25
5. Step 5: Solve for x
   x = 4,613,917,270.25/78,434.12
6. Step 6: Final answer
   x = 58,825.38