Finding the Fourth Proportional to 118,298.79, 163,253.18 and 64,584.87

Step by Step Solution

1. Step 1: Write the proportion equation
   118,298.79 : 163,253.18 = 64,584.87 : x
2. Step 2: Convert to fraction form
   118,298.79/163,253.18 = 64,584.87/x
3. Step 3: Cross multiply
   118,298.79x = 163,253.18 × 64,584.87
4. Step 4: Simplify right side
   118,298.79x = 10,543,685,084.46
5. Step 5: Solve for x
   x = 10,543,685,084.46/118,298.79
6. Step 6: Final answer
   x = 89,127.58