Finding the Fourth Proportional to 111,818.94, 167,507.01 and 72,403.80

Step by Step Solution

1. Step 1: Write the proportion equation
   111,818.94 : 167,507.01 = 72,403.80 : x
2. Step 2: Convert to fraction form
   111,818.94/167,507.01 = 72,403.80/x
3. Step 3: Cross multiply
   111,818.94x = 167,507.01 × 72,403.80
4. Step 4: Simplify right side
   111,818.94x = 12,128,144,050.64
5. Step 5: Solve for x
   x = 12,128,144,050.64/111,818.94
6. Step 6: Final answer
   x = 108,462.34