Finding the Fourth Proportional to 111,003.02, 153,081.93 and 72,748.64

Step by Step Solution

1. Step 1: Write the proportion equation
   111,003.02 : 153,081.93 = 72,748.64 : x
2. Step 2: Convert to fraction form
   111,003.02/153,081.93 = 72,748.64/x
3. Step 3: Cross multiply
   111,003.02x = 153,081.93 × 72,748.64
4. Step 4: Simplify right side
   111,003.02x = 11,136,501,086.92
5. Step 5: Solve for x
   x = 11,136,501,086.92/111,003.02
6. Step 6: Final answer
   x = 100,326.11