Finding the Fourth Proportional to 118,723.76, 163,839.04 and 64,276.50

Step by Step Solution

1. Step 1: Write the proportion equation
   118,723.76 : 163,839.04 = 64,276.50 : x
2. Step 2: Convert to fraction form
   118,723.76/163,839.04 = 64,276.50/x
3. Step 3: Cross multiply
   118,723.76x = 163,839.04 × 64,276.50
4. Step 4: Simplify right side
   118,723.76x = 10,531,000,054.56
5. Step 5: Solve for x
   x = 10,531,000,054.56/118,723.76
6. Step 6: Final answer
   x = 88,701.71