Finding the Fourth Proportional to 92,071.47, 138,113.05 and 28,894.09

Step by Step Solution

1. Step 1: Write the proportion equation
   92,071.47 : 138,113.05 = 28,894.09 : x
2. Step 2: Convert to fraction form
   92,071.47/138,113.05 = 28,894.09/x
3. Step 3: Cross multiply
   92,071.47x = 138,113.05 × 28,894.09
4. Step 4: Simplify right side
   92,071.47x = 3,990,650,896.87
5. Step 5: Solve for x
   x = 3,990,650,896.87/92,071.47
6. Step 6: Final answer
   x = 43,342.97