Finding the Fourth Proportional to 208,112.84, 287,196.46 and 112,619.51

Step by Step Solution

1. Step 1: Write the proportion equation
   208,112.84 : 287,196.46 = 112,619.51 : x
2. Step 2: Convert to fraction form
   208,112.84/287,196.46 = 112,619.51/x
3. Step 3: Cross multiply
   208,112.84x = 287,196.46 × 112,619.51
4. Step 4: Simplify right side
   208,112.84x = 32,343,922,881.40
5. Step 5: Solve for x
   x = 32,343,922,881.40/208,112.84
6. Step 6: Final answer
   x = 155,415.32