Finding the Fourth Proportional to 118,746.81, 163,870.85 and 64,299.57

Step by Step Solution

1. Step 1: Write the proportion equation
   118,746.81 : 163,870.85 = 64,299.57 : x
2. Step 2: Convert to fraction form
   118,746.81/163,870.85 = 64,299.57/x
3. Step 3: Cross multiply
   118,746.81x = 163,870.85 × 64,299.57
4. Step 4: Simplify right side
   118,746.81x = 10,536,825,296.86
5. Step 5: Solve for x
   x = 10,536,825,296.86/118,746.81
6. Step 6: Final answer
   x = 88,733.54