Finding the Fourth Proportional to 151,422.89, 208,963.60 and 87,797.59

Step by Step Solution

1. Step 1: Write the proportion equation
   151,422.89 : 208,963.60 = 87,797.59 : x
2. Step 2: Convert to fraction form
   151,422.89/208,963.60 = 87,797.59/x
3. Step 3: Cross multiply
   151,422.89x = 208,963.60 × 87,797.59
4. Step 4: Simplify right side
   151,422.89x = 18,346,500,817.39
5. Step 5: Solve for x
   x = 18,346,500,817.39/151,422.89
6. Step 6: Final answer
   x = 121,160.69