Finding the Fourth Proportional to 92,005.73, 138,008.42 and 28,830.69

Step by Step Solution

1. Step 1: Write the proportion equation
   92,005.73 : 138,008.42 = 28,830.69 : x
2. Step 2: Convert to fraction form
   92,005.73/138,008.42 = 28,830.69/x
3. Step 3: Cross multiply
   92,005.73x = 138,008.42 × 28,830.69
4. Step 4: Simplify right side
   92,005.73x = 3,978,877,974.41
5. Step 5: Solve for x
   x = 3,978,877,974.41/92,005.73
6. Step 6: Final answer
   x = 43,245.98