Finding the Fourth Proportional to 72,345.30, 108,503.55 and 34,905.30

Step by Step Solution

1. Step 1: Write the proportion equation
   72,345.30 : 108,503.55 = 34,905.30 : x
2. Step 2: Convert to fraction form
   72,345.30/108,503.55 = 34,905.30/x
3. Step 3: Cross multiply
   72,345.30x = 108,503.55 × 34,905.30
4. Step 4: Simplify right side
   72,345.30x = 3,787,348,963.82
5. Step 5: Solve for x
   x = 3,787,348,963.82/72,345.30
6. Step 6: Final answer
   x = 52,351.00