Finding the Fourth Proportional to 117,158.94, 161,678.43 and 63,443.79

Step by Step Solution

1. Step 1: Write the proportion equation
   117,158.94 : 161,678.43 = 63,443.79 : x
2. Step 2: Convert to fraction form
   117,158.94/161,678.43 = 63,443.79/x
3. Step 3: Cross multiply
   117,158.94x = 161,678.43 × 63,443.79
4. Step 4: Simplify right side
   117,158.94x = 10,257,492,360.45
5. Step 5: Solve for x
   x = 10,257,492,360.45/117,158.94
6. Step 6: Final answer
   x = 87,551.94