Finding the Fourth Proportional to 42,477.10, 63,679.20 and 21,700.60

Step by Step Solution

1. Step 1: Write the proportion equation
   42,477.10 : 63,679.20 = 21,700.60 : x
2. Step 2: Convert to fraction form
   42,477.10/63,679.20 = 21,700.60/x
3. Step 3: Cross multiply
   42,477.10x = 63,679.20 × 21,700.60
4. Step 4: Simplify right side
   42,477.10x = 1,381,876,847.52
5. Step 5: Solve for x
   x = 1,381,876,847.52/42,477.10
6. Step 6: Final answer
   x = 32,532.28