Finding the Fourth Proportional to 42,979.78, 59,296.88 and 28,084.42

Step by Step Solution

1. Step 1: Write the proportion equation
   42,979.78 : 59,296.88 = 28,084.42 : x
2. Step 2: Convert to fraction form
   42,979.78/59,296.88 = 28,084.42/x
3. Step 3: Cross multiply
   42,979.78x = 59,296.88 × 28,084.42
4. Step 4: Simplify right side
   42,979.78x = 1,665,318,482.61
5. Step 5: Solve for x
   x = 1,665,318,482.61/42,979.78
6. Step 6: Final answer
   x = 38,746.56