Finding the Fourth Proportional to 111,803.30, 167,267.55 and 72,437.30

Step by Step Solution

1. Step 1: Write the proportion equation
   111,803.30 : 167,267.55 = 72,437.30 : x
2. Step 2: Convert to fraction form
   111,803.30/167,267.55 = 72,437.30/x
3. Step 3: Cross multiply
   111,803.30x = 167,267.55 × 72,437.30
4. Step 4: Simplify right side
   111,803.30x = 12,116,409,699.62
5. Step 5: Solve for x
   x = 12,116,409,699.62/111,803.30
6. Step 6: Final answer
   x = 108,372.56