Finding the Fourth Proportional to 118,679.27, 163,777.59 and 64,967.72

Step by Step Solution

1. Step 1: Write the proportion equation
   118,679.27 : 163,777.59 = 64,967.72 : x
2. Step 2: Convert to fraction form
   118,679.27/163,777.59 = 64,967.72/x
3. Step 3: Cross multiply
   118,679.27x = 163,777.59 × 64,967.72
4. Step 4: Simplify right side
   118,679.27x = 10,640,255,790.51
5. Step 5: Solve for x
   x = 10,640,255,790.51/118,679.27
6. Step 6: Final answer
   x = 89,655.56