Finding the Fourth Proportional to 78,434.05, 108,237.56 and 42,624.18

Step by Step Solution

1. Step 1: Write the proportion equation
   78,434.05 : 108,237.56 = 42,624.18 : x
2. Step 2: Convert to fraction form
   78,434.05/108,237.56 = 42,624.18/x
3. Step 3: Cross multiply
   78,434.05x = 108,237.56 × 42,624.18
4. Step 4: Simplify right side
   78,434.05x = 4,613,537,240.20
5. Step 5: Solve for x
   x = 4,613,537,240.20/78,434.05
6. Step 6: Final answer
   x = 58,820.60