Finding the Fourth Proportional to 118,667.45, 163,761.29 and 64,955.87

Step by Step Solution

1. Step 1: Write the proportion equation
   118,667.45 : 163,761.29 = 64,955.87 : x
2. Step 2: Convert to fraction form
   118,667.45/163,761.29 = 64,955.87/x
3. Step 3: Cross multiply
   118,667.45x = 163,761.29 × 64,955.87
4. Step 4: Simplify right side
   118,667.45x = 10,637,257,148.90
5. Step 5: Solve for x
   x = 10,637,257,148.90/118,667.45
6. Step 6: Final answer
   x = 89,639.21