Finding the Fourth Proportional to 76,665.34, 105,798.15 and 42,673.09

Step by Step Solution

1. Step 1: Write the proportion equation
   76,665.34 : 105,798.15 = 42,673.09 : x
2. Step 2: Convert to fraction form
   76,665.34/105,798.15 = 42,673.09/x
3. Step 3: Cross multiply
   76,665.34x = 105,798.15 × 42,673.09
4. Step 4: Simplify right side
   76,665.34x = 4,514,733,976.78
5. Step 5: Solve for x
   x = 4,514,733,976.78/76,665.34
6. Step 6: Final answer
   x = 58,888.85