Finding the Fourth Proportional to 608,061.91, 912,111.40 and 208,696.88

Step by Step Solution

1. Step 1: Write the proportion equation
   608,061.91 : 912,111.40 = 208,696.88 : x
2. Step 2: Convert to fraction form
   608,061.91/912,111.40 = 208,696.88/x
3. Step 3: Cross multiply
   608,061.91x = 912,111.40 × 208,696.88
4. Step 4: Simplify right side
   608,061.91x = 190,354,803,392.43
5. Step 5: Solve for x
   x = 190,354,803,392.43/608,061.91
6. Step 6: Final answer
   x = 313,051.68