Finding the Fourth Proportional to 52,485.78, 72,429.82 and 28,611.95

Step by Step Solution

1. Step 1: Write the proportion equation
   52,485.78 : 72,429.82 = 28,611.95 : x
2. Step 2: Convert to fraction form
   52,485.78/72,429.82 = 28,611.95/x
3. Step 3: Cross multiply
   52,485.78x = 72,429.82 × 28,611.95
4. Step 4: Simplify right side
   52,485.78x = 2,072,358,388.35
5. Step 5: Solve for x
   x = 2,072,358,388.35/52,485.78
6. Step 6: Final answer
   x = 39,484.19