Finding the Fourth Proportional to 111,090.76, 153,145.77 and 79,204.30

Step by Step Solution

1. Step 1: Write the proportion equation
   111,090.76 : 153,145.77 = 79,204.30 : x
2. Step 2: Convert to fraction form
   111,090.76/153,145.77 = 79,204.30/x
3. Step 3: Cross multiply
   111,090.76x = 153,145.77 × 79,204.30
4. Step 4: Simplify right side
   111,090.76x = 12,129,803,510.81
5. Step 5: Solve for x
   x = 12,129,803,510.81/111,090.76
6. Step 6: Final answer
   x = 109,188.23