Finding the Fourth Proportional to 118,412.51, 163,407.32 and 64,696.37

Step by Step Solution

1. Step 1: Write the proportion equation
   118,412.51 : 163,407.32 = 64,696.37 : x
2. Step 2: Convert to fraction form
   118,412.51/163,407.32 = 64,696.37/x
3. Step 3: Cross multiply
   118,412.51x = 163,407.32 × 64,696.37
4. Step 4: Simplify right side
   118,412.51x = 10,571,859,618.39
5. Step 5: Solve for x
   x = 10,571,859,618.39/118,412.51
6. Step 6: Final answer
   x = 89,279.93