Finding the Fourth Proportional to 111,973.55, 154,543.61 and 64,242.68

Step by Step Solution

1. Step 1: Write the proportion equation
   111,973.55 : 154,543.61 = 64,242.68 : x
2. Step 2: Convert to fraction form
   111,973.55/154,543.61 = 64,242.68/x
3. Step 3: Cross multiply
   111,973.55x = 154,543.61 × 64,242.68
4. Step 4: Simplify right side
   111,973.55x = 9,928,295,071.16
5. Step 5: Solve for x
   x = 9,928,295,071.16/111,973.55
6. Step 6: Final answer
   x = 88,666.44