Finding the Fourth Proportional to 208,796.94, 288,263.52 and 137,300.27

Step by Step Solution

1. Step 1: Write the proportion equation
   208,796.94 : 288,263.52 = 137,300.27 : x
2. Step 2: Convert to fraction form
   208,796.94/288,263.52 = 137,300.27/x
3. Step 3: Cross multiply
   208,796.94x = 288,263.52 × 137,300.27
4. Step 4: Simplify right side
   208,796.94x = 39,578,657,685.83
5. Step 5: Solve for x
   x = 39,578,657,685.83/208,796.94
6. Step 6: Final answer
   x = 189,555.74