Finding the Fourth Proportional to 118,663.89, 178,022.51 and 39,776.10

Step by Step Solution

1. Step 1: Write the proportion equation
   118,663.89 : 178,022.51 = 39,776.10 : x
2. Step 2: Convert to fraction form
   118,663.89/178,022.51 = 39,776.10/x
3. Step 3: Cross multiply
   118,663.89x = 178,022.51 × 39,776.10
4. Step 4: Simplify right side
   118,663.89x = 7,081,040,961.13
5. Step 5: Solve for x
   x = 7,081,040,961.13/118,663.89
6. Step 6: Final answer
   x = 59,673.09