Finding the Fourth Proportional to 211,061.38, 291,261.82 and 115,568.09

Step by Step Solution

1. Step 1: Write the proportion equation
   211,061.38 : 291,261.82 = 115,568.09 : x
2. Step 2: Convert to fraction form
   211,061.38/291,261.82 = 115,568.09/x
3. Step 3: Cross multiply
   211,061.38x = 291,261.82 × 115,568.09
4. Step 4: Simplify right side
   211,061.38x = 33,660,572,227.32
5. Step 5: Solve for x
   x = 33,660,572,227.32/211,061.38
6. Step 6: Final answer
   x = 159,482.38