Finding the Fourth Proportional to 300,814.61, 415,123.80 and 164,857.10

Step by Step Solution

1. Step 1: Write the proportion equation
   300,814.61 : 415,123.80 = 164,857.10 : x
2. Step 2: Convert to fraction form
   300,814.61/415,123.80 = 164,857.10/x
3. Step 3: Cross multiply
   300,814.61x = 415,123.80 × 164,857.10
4. Step 4: Simplify right side
   300,814.61x = 68,436,105,808.98
5. Step 5: Solve for x
   x = 68,436,105,808.98/300,814.61
6. Step 6: Final answer
   x = 227,502.60