Finding the Fourth Proportional to 118,900.86, 164,082.78 and 65,185.71

Step by Step Solution

1. Step 1: Write the proportion equation
   118,900.86 : 164,082.78 = 65,185.71 : x
2. Step 2: Convert to fraction form
   118,900.86/164,082.78 = 65,185.71/x
3. Step 3: Cross multiply
   118,900.86x = 164,082.78 × 65,185.71
4. Step 4: Simplify right side
   118,900.86x = 10,695,852,513.07
5. Step 5: Solve for x
   x = 10,695,852,513.07/118,900.86
6. Step 6: Final answer
   x = 89,956.06