Finding the Fourth Proportional to 74,200.10, 102,431.60 and 42,362.86

Step by Step Solution

1. Step 1: Write the proportion equation
   74,200.10 : 102,431.60 = 42,362.86 : x
2. Step 2: Convert to fraction form
   74,200.10/102,431.60 = 42,362.86/x
3. Step 3: Cross multiply
   74,200.10x = 102,431.60 × 42,362.86
4. Step 4: Simplify right side
   74,200.10x = 4,339,295,530.38
5. Step 5: Solve for x
   x = 4,339,295,530.38/74,200.10
6. Step 6: Final answer
   x = 58,480.99