Finding the Fourth Proportional to 42,385.83, 58,503.21 and 28,962.51

Step by Step Solution

1. Step 1: Write the proportion equation
   42,385.83 : 58,503.21 = 28,962.51 : x
2. Step 2: Convert to fraction form
   42,385.83/58,503.21 = 28,962.51/x
3. Step 3: Cross multiply
   42,385.83x = 58,503.21 × 28,962.51
4. Step 4: Simplify right side
   42,385.83x = 1,694,399,804.66
5. Step 5: Solve for x
   x = 1,694,399,804.66/42,385.83
6. Step 6: Final answer
   x = 39,975.62