Finding the Fourth Proportional to 211,471.98, 291,846.78 and 120,826.01

Step by Step Solution

1. Step 1: Write the proportion equation
   211,471.98 : 291,846.78 = 120,826.01 : x
2. Step 2: Convert to fraction form
   211,471.98/291,846.78 = 120,826.01/x
3. Step 3: Cross multiply
   211,471.98x = 291,846.78 × 120,826.01
4. Step 4: Simplify right side
   211,471.98x = 35,262,680,499.51
5. Step 5: Solve for x
   x = 35,262,680,499.51/211,471.98
6. Step 6: Final answer
   x = 166,748.71