Finding the Fourth Proportional to 191,996.83, 287,437.48 and 111,790.12

Step by Step Solution

1. Step 1: Write the proportion equation
   191,996.83 : 287,437.48 = 111,790.12 : x
2. Step 2: Convert to fraction form
   191,996.83/287,437.48 = 111,790.12/x
3. Step 3: Cross multiply
   191,996.83x = 287,437.48 × 111,790.12
4. Step 4: Simplify right side
   191,996.83x = 32,132,671,629.28
5. Step 5: Solve for x
   x = 32,132,671,629.28/191,996.83
6. Step 6: Final answer
   x = 167,360.43