Finding the Fourth Proportional to 342,667.84, 472,816.01 and 221,792.35

Step by Step Solution

1. Step 1: Write the proportion equation
   342,667.84 : 472,816.01 = 221,792.35 : x
2. Step 2: Convert to fraction form
   342,667.84/472,816.01 = 221,792.35/x
3. Step 3: Cross multiply
   342,667.84x = 472,816.01 × 221,792.35
4. Step 4: Simplify right side
   342,667.84x = 104,866,973,975.52
5. Step 5: Solve for x
   x = 104,866,973,975.52/342,667.84
6. Step 6: Final answer
   x = 306,030.98