Finding the Fourth Proportional to 415,461.56, 623,276.18 and 131,196.52

Step by Step Solution

1. Step 1: Write the proportion equation
   415,461.56 : 623,276.18 = 131,196.52 : x
2. Step 2: Convert to fraction form
   415,461.56/623,276.18 = 131,196.52/x
3. Step 3: Cross multiply
   415,461.56x = 623,276.18 × 131,196.52
4. Step 4: Simplify right side
   415,461.56x = 81,771,665,814.89
5. Step 5: Solve for x
   x = 81,771,665,814.89/415,461.56
6. Step 6: Final answer
   x = 196,821.26