Finding the Fourth Proportional to 76,665.71, 105,798.67 and 42,673.47

Step by Step Solution

1. Step 1: Write the proportion equation
   76,665.71 : 105,798.67 = 42,673.47 : x
2. Step 2: Convert to fraction form
   76,665.71/105,798.67 = 42,673.47/x
3. Step 3: Cross multiply
   76,665.71x = 105,798.67 × 42,673.47
4. Step 4: Simplify right side
   76,665.71x = 4,514,796,370.28
5. Step 5: Solve for x
   x = 4,514,796,370.28/76,665.71
6. Step 6: Final answer
   x = 58,889.38