Finding the Fourth Proportional to 42,365.60, 58,439.16 and 28,025.84

Step by Step Solution

1. Step 1: Write the proportion equation
   42,365.60 : 58,439.16 = 28,025.84 : x
2. Step 2: Convert to fraction form
   42,365.60/58,439.16 = 28,025.84/x
3. Step 3: Cross multiply
   42,365.60x = 58,439.16 × 28,025.84
4. Step 4: Simplify right side
   42,365.60x = 1,637,806,547.89
5. Step 5: Solve for x
   x = 1,637,806,547.89/42,365.60
6. Step 6: Final answer
   x = 38,658.88