Finding the Fourth Proportional to 208,096.34, 287,172.86 and 112,603

Step by Step Solution

1. Step 1: Write the proportion equation
   208,096.34 : 287,172.86 = 112,603 : x
2. Step 2: Convert to fraction form
   208,096.34/287,172.86 = 112,603/x
3. Step 3: Cross multiply
   208,096.34x = 287,172.86 × 112,603
4. Step 4: Simplify right side
   208,096.34x = 32,336,525,554.58
5. Step 5: Solve for x
   x = 32,336,525,554.58/208,096.34
6. Step 6: Final answer
   x = 155,392.09