Finding the Fourth Proportional to 208,477.31, 287,698.59 and 112,983.98

Step by Step Solution

1. Step 1: Write the proportion equation
   208,477.31 : 287,698.59 = 112,983.98 : x
2. Step 2: Convert to fraction form
   208,477.31/287,698.59 = 112,983.98/x
3. Step 3: Cross multiply
   208,477.31x = 287,698.59 × 112,983.98
4. Step 4: Simplify right side
   208,477.31x = 32,505,330,300.10
5. Step 5: Solve for x
   x = 32,505,330,300.10/208,477.31
6. Step 6: Final answer
   x = 155,917.84