Finding the Fourth Proportional to 72,703.72, 109,068.22 and 28,354.60

Step by Step Solution

1. Step 1: Write the proportion equation
   72,703.72 : 109,068.22 = 28,354.60 : x
2. Step 2: Convert to fraction form
   72,703.72/109,068.22 = 28,354.60/x
3. Step 3: Cross multiply
   72,703.72x = 109,068.22 × 28,354.60
4. Step 4: Simplify right side
   72,703.72x = 3,092,585,750.81
5. Step 5: Solve for x
   x = 3,092,585,750.81/72,703.72
6. Step 6: Final answer
   x = 42,536.83