Finding the Fourth Proportional to 118,953.62, 164,158.10 and 65,238.17

Step by Step Solution

1. Step 1: Write the proportion equation
   118,953.62 : 164,158.10 = 65,238.17 : x
2. Step 2: Convert to fraction form
   118,953.62/164,158.10 = 65,238.17/x
3. Step 3: Cross multiply
   118,953.62x = 164,158.10 × 65,238.17
4. Step 4: Simplify right side
   118,953.62x = 10,709,372,887.70
5. Step 5: Solve for x
   x = 10,709,372,887.70/118,953.62
6. Step 6: Final answer
   x = 90,029.82