Finding the Fourth Proportional to 118,796.12, 163,931.76 and 65,071.79

Step by Step Solution

1. Step 1: Write the proportion equation
   118,796.12 : 163,931.76 = 65,071.79 : x
2. Step 2: Convert to fraction form
   118,796.12/163,931.76 = 65,071.79/x
3. Step 3: Cross multiply
   118,796.12x = 163,931.76 × 65,071.79
4. Step 4: Simplify right side
   118,796.12x = 10,667,333,061.05
5. Step 5: Solve for x
   x = 10,667,333,061.05/118,796.12
6. Step 6: Final answer
   x = 89,795.30