Finding the Fourth Proportional to 118,938.42, 164,134.91 and 64,492.38

Step by Step Solution

1. Step 1: Write the proportion equation
   118,938.42 : 164,134.91 = 64,492.38 : x
2. Step 2: Convert to fraction form
   118,938.42/164,134.91 = 64,492.38/x
3. Step 3: Cross multiply
   118,938.42x = 164,134.91 × 64,492.38
4. Step 4: Simplify right side
   118,938.42x = 10,585,450,664.52
5. Step 5: Solve for x
   x = 10,585,450,664.52/118,938.42
6. Step 6: Final answer
   x = 88,999.42