Finding the Fourth Proportional to 56,665.16, 84,833.51 and 42,684.05

Step by Step Solution

1. Step 1: Write the proportion equation
   56,665.16 : 84,833.51 = 42,684.05 : x
2. Step 2: Convert to fraction form
   56,665.16/84,833.51 = 42,684.05/x
3. Step 3: Cross multiply
   56,665.16x = 84,833.51 × 42,684.05
4. Step 4: Simplify right side
   56,665.16x = 3,621,037,782.52
5. Step 5: Solve for x
   x = 3,621,037,782.52/56,665.16
6. Step 6: Final answer
   x = 63,902.37