Finding the Fourth Proportional to 72,746.60, 109,146.55 and 30,637.28

Step by Step Solution

1. Step 1: Write the proportion equation
   72,746.60 : 109,146.55 = 30,637.28 : x
2. Step 2: Convert to fraction form
   72,746.60/109,146.55 = 30,637.28/x
3. Step 3: Cross multiply
   72,746.60x = 109,146.55 × 30,637.28
4. Step 4: Simplify right side
   72,746.60x = 3,343,953,413.38
5. Step 5: Solve for x
   x = 3,343,953,413.38/72,746.60
6. Step 6: Final answer
   x = 45,967.15