Finding the Fourth Proportional to 67,398.72, 101,097.60 and 52,620

Step by Step Solution

1. Step 1: Write the proportion equation
   67,398.72 : 101,097.60 = 52,620 : x
2. Step 2: Convert to fraction form
   67,398.72/101,097.60 = 52,620/x
3. Step 3: Cross multiply
   67,398.72x = 101,097.60 × 52,620
4. Step 4: Simplify right side
   67,398.72x = 5,319,755,712
5. Step 5: Solve for x
   x = 5,319,755,712/67,398.72
6. Step 6: Final answer
   x = 78,929.63