Finding the Fourth Proportional to 72,354.21, 107,889.71 and 67,528.23

Step by Step Solution

1. Step 1: Write the proportion equation
   72,354.21 : 107,889.71 = 67,528.23 : x
2. Step 2: Convert to fraction form
   72,354.21/107,889.71 = 67,528.23/x
3. Step 3: Cross multiply
   72,354.21x = 107,889.71 × 67,528.23
4. Step 4: Simplify right side
   72,354.21x = 7,285,601,320.33
5. Step 5: Solve for x
   x = 7,285,601,320.33/72,354.21
6. Step 6: Final answer
   x = 100,693.54