Finding the Fourth Proportional to 613,109.63, 919,820.01 and 192,389.15

Step by Step Solution

1. Step 1: Write the proportion equation
   613,109.63 : 919,820.01 = 192,389.15 : x
2. Step 2: Convert to fraction form
   613,109.63/919,820.01 = 192,389.15/x
3. Step 3: Cross multiply
   613,109.63x = 919,820.01 × 192,389.15
4. Step 4: Simplify right side
   613,109.63x = 176,963,389,876.89
5. Step 5: Solve for x
   x = 176,963,389,876.89/613,109.63
6. Step 6: Final answer
   x = 288,632.54