Finding the Fourth Proportional to 211,019.76, 291,196.35 and 115,508.34

Step by Step Solution

1. Step 1: Write the proportion equation
   211,019.76 : 291,196.35 = 115,508.34 : x
2. Step 2: Convert to fraction form
   211,019.76/291,196.35 = 115,508.34/x
3. Step 3: Cross multiply
   211,019.76x = 291,196.35 × 115,508.34
4. Step 4: Simplify right side
   211,019.76x = 33,635,607,002.56
5. Step 5: Solve for x
   x = 33,635,607,002.56/211,019.76
6. Step 6: Final answer
   x = 159,395.53