Finding the Fourth Proportional to 42,762.86, 64,154.73 and 30,137.23

Step by Step Solution

1. Step 1: Write the proportion equation
   42,762.86 : 64,154.73 = 30,137.23 : x
2. Step 2: Convert to fraction form
   42,762.86/64,154.73 = 30,137.23/x
3. Step 3: Cross multiply
   42,762.86x = 64,154.73 × 30,137.23
4. Step 4: Simplify right side
   42,762.86x = 1,933,445,542.52
5. Step 5: Solve for x
   x = 1,933,445,542.52/42,762.86
6. Step 6: Final answer
   x = 45,213.19