Finding the Fourth Proportional to 413,870.10, 620,805.15 and 164,552.10

Step by Step Solution

1. Step 1: Write the proportion equation
   413,870.10 : 620,805.15 = 164,552.10 : x
2. Step 2: Convert to fraction form
   413,870.10/620,805.15 = 164,552.10/x
3. Step 3: Cross multiply
   413,870.10x = 620,805.15 × 164,552.10
4. Step 4: Simplify right side
   413,870.10x = 102,154,791,123.32
5. Step 5: Solve for x
   x = 102,154,791,123.32/413,870.10
6. Step 6: Final answer
   x = 246,828.15