Finding the Fourth Proportional to 151,213.86, 208,641.65 and 87,514.76

Step by Step Solution

1. Step 1: Write the proportion equation
   151,213.86 : 208,641.65 = 87,514.76 : x
2. Step 2: Convert to fraction form
   151,213.86/208,641.65 = 87,514.76/x
3. Step 3: Cross multiply
   151,213.86x = 208,641.65 × 87,514.76
4. Step 4: Simplify right side
   151,213.86x = 18,259,224,009.78
5. Step 5: Solve for x
   x = 18,259,224,009.78/151,213.86
6. Step 6: Final answer
   x = 120,750.99