Finding the Fourth Proportional to 118,107.09, 162,985.59 and 64,392.57

Step by Step Solution

1. Step 1: Write the proportion equation
   118,107.09 : 162,985.59 = 64,392.57 : x
2. Step 2: Convert to fraction form
   118,107.09/162,985.59 = 64,392.57/x
3. Step 3: Cross multiply
   118,107.09x = 162,985.59 × 64,392.57
4. Step 4: Simplify right side
   118,107.09x = 10,495,061,013.07
5. Step 5: Solve for x
   x = 10,495,061,013.07/118,107.09
6. Step 6: Final answer
   x = 88,860.55