Finding the Fourth Proportional to 42,386.08, 58,503.54 and 28,962.76

Step by Step Solution

1. Step 1: Write the proportion equation
   42,386.08 : 58,503.54 = 28,962.76 : x
2. Step 2: Convert to fraction form
   42,386.08/58,503.54 = 28,962.76/x
3. Step 3: Cross multiply
   42,386.08x = 58,503.54 × 28,962.76
4. Step 4: Simplify right side
   42,386.08x = 1,694,423,988.17
5. Step 5: Solve for x
   x = 1,694,423,988.17/42,386.08
6. Step 6: Final answer
   x = 39,975.95