Finding the Fourth Proportional to 404,641.86, 607,084.34 and 191,572.17

Step by Step Solution

1. Step 1: Write the proportion equation
   404,641.86 : 607,084.34 = 191,572.17 : x
2. Step 2: Convert to fraction form
   404,641.86/607,084.34 = 191,572.17/x
3. Step 3: Cross multiply
   404,641.86x = 607,084.34 × 191,572.17
4. Step 4: Simplify right side
   404,641.86x = 116,300,463,428.96
5. Step 5: Solve for x
   x = 116,300,463,428.96/404,641.86
6. Step 6: Final answer
   x = 287,415.80