Finding the Fourth Proportional to 151,142.58, 208,567.89 and 87,475.86

Step by Step Solution

1. Step 1: Write the proportion equation
   151,142.58 : 208,567.89 = 87,475.86 : x
2. Step 2: Convert to fraction form
   151,142.58/208,567.89 = 87,475.86/x
3. Step 3: Cross multiply
   151,142.58x = 208,567.89 × 87,475.86
4. Step 4: Simplify right side
   151,142.58x = 18,244,655,546.14
5. Step 5: Solve for x
   x = 18,244,655,546.14/151,142.58
6. Step 6: Final answer
   x = 120,711.55