Finding the Fourth Proportional to 613,038.89, 919,690.69 and 186,608.06

Step by Step Solution

1. Step 1: Write the proportion equation
   613,038.89 : 919,690.69 = 186,608.06 : x
2. Step 2: Convert to fraction form
   613,038.89/919,690.69 = 186,608.06/x
3. Step 3: Cross multiply
   613,038.89x = 919,690.69 × 186,608.06
4. Step 4: Simplify right side
   613,038.89x = 171,621,689,929.47
5. Step 5: Solve for x
   x = 171,621,689,929.47/613,038.89
6. Step 6: Final answer
   x = 279,952.37