Finding the Fourth Proportional to 37,155.28, 55,700.11 and 28,429.15

Step by Step Solution

1. Step 1: Write the proportion equation
   37,155.28 : 55,700.11 = 28,429.15 : x
2. Step 2: Convert to fraction form
   37,155.28/55,700.11 = 28,429.15/x
3. Step 3: Cross multiply
   37,155.28x = 55,700.11 × 28,429.15
4. Step 4: Simplify right side
   37,155.28x = 1,583,506,503.71
5. Step 5: Solve for x
   x = 1,583,506,503.71/37,155.28
6. Step 6: Final answer
   x = 42,618.62