Finding the Fourth Proportional to 136,940.50, 205,579.89 and 64,962.23

Step by Step Solution

1. Step 1: Write the proportion equation
   136,940.50 : 205,579.89 = 64,962.23 : x
2. Step 2: Convert to fraction form
   136,940.50/205,579.89 = 64,962.23/x
3. Step 3: Cross multiply
   136,940.50x = 205,579.89 × 64,962.23
4. Step 4: Simplify right side
   136,940.50x = 13,354,928,097.55
5. Step 5: Solve for x
   x = 13,354,928,097.55/136,940.50
6. Step 6: Final answer
   x = 97,523.59