Finding the Fourth Proportional to 42,300.18, 63,445.37 and 11,137.86

Step by Step Solution

1. Step 1: Write the proportion equation
   42,300.18 : 63,445.37 = 11,137.86 : x
2. Step 2: Convert to fraction form
   42,300.18/63,445.37 = 11,137.86/x
3. Step 3: Cross multiply
   42,300.18x = 63,445.37 × 11,137.86
4. Step 4: Simplify right side
   42,300.18x = 706,645,593.02
5. Step 5: Solve for x
   x = 706,645,593.02/42,300.18
6. Step 6: Final answer
   x = 16,705.50