Finding the Fourth Proportional to 42,101.60, 63,152.71 and 28,913.99

Step by Step Solution

1. Step 1: Write the proportion equation
   42,101.60 : 63,152.71 = 28,913.99 : x
2. Step 2: Convert to fraction form
   42,101.60/63,152.71 = 28,913.99/x
3. Step 3: Cross multiply
   42,101.60x = 63,152.71 × 28,913.99
4. Step 4: Simplify right side
   42,101.60x = 1,825,996,825.41
5. Step 5: Solve for x
   x = 1,825,996,825.41/42,101.60
6. Step 6: Final answer
   x = 43,371.20