Finding the Fourth Proportional to 78,435.12, 108,242.09 and 42,627.45

Step by Step Solution

1. Step 1: Write the proportion equation
   78,435.12 : 108,242.09 = 42,627.45 : x
2. Step 2: Convert to fraction form
   78,435.12/108,242.09 = 42,627.45/x
3. Step 3: Cross multiply
   78,435.12x = 108,242.09 × 42,627.45
4. Step 4: Simplify right side
   78,435.12x = 4,614,084,279.37
5. Step 5: Solve for x
   x = 4,614,084,279.37/78,435.12
6. Step 6: Final answer
   x = 58,826.76