Finding the Fourth Proportional to 191,415.12, 286,806.72 and 111,227.98

Step by Step Solution

1. Step 1: Write the proportion equation
   191,415.12 : 286,806.72 = 111,227.98 : x
2. Step 2: Convert to fraction form
   191,415.12/286,806.72 = 111,227.98/x
3. Step 3: Cross multiply
   191,415.12x = 286,806.72 × 111,227.98
4. Step 4: Simplify right side
   191,415.12x = 31,900,932,116.03
5. Step 5: Solve for x
   x = 31,900,932,116.03/191,415.12
6. Step 6: Final answer
   x = 166,658.37