Finding the Fourth Proportional to 118,015.38, 162,859.16 and 64,300.78

Step by Step Solution

1. Step 1: Write the proportion equation
   118,015.38 : 162,859.16 = 64,300.78 : x
2. Step 2: Convert to fraction form
   118,015.38/162,859.16 = 64,300.78/x
3. Step 3: Cross multiply
   118,015.38x = 162,859.16 × 64,300.78
4. Step 4: Simplify right side
   118,015.38x = 10,471,971,018.14
5. Step 5: Solve for x
   x = 10,471,971,018.14/118,015.38
6. Step 6: Final answer
   x = 88,733.95