Finding the Fourth Proportional to 111,003.26, 153,082.28 and 72,748.87

Step by Step Solution

1. Step 1: Write the proportion equation
   111,003.26 : 153,082.28 = 72,748.87 : x
2. Step 2: Convert to fraction form
   111,003.26/153,082.28 = 72,748.87/x
3. Step 3: Cross multiply
   111,003.26x = 153,082.28 × 72,748.87
4. Step 4: Simplify right side
   111,003.26x = 11,136,562,887.02
5. Step 5: Solve for x
   x = 11,136,562,887.02/111,003.26
6. Step 6: Final answer
   x = 100,326.45