Finding the Fourth Proportional to 609,521.18, 914,341.89 and 210,109.37

Step by Step Solution

1. Step 1: Write the proportion equation
   609,521.18 : 914,341.89 = 210,109.37 : x
2. Step 2: Convert to fraction form
   609,521.18/914,341.89 = 210,109.37/x
3. Step 3: Cross multiply
   609,521.18x = 914,341.89 × 210,109.37
4. Step 4: Simplify right side
   609,521.18x = 192,111,793,900.80
5. Step 5: Solve for x
   x = 192,111,793,900.80/609,521.18
6. Step 6: Final answer
   x = 315,184.77