Finding the Fourth Proportional to 55,663.22, 76,753.43 and 42,887.90

Step by Step Solution

1. Step 1: Write the proportion equation
   55,663.22 : 76,753.43 = 42,887.90 : x
2. Step 2: Convert to fraction form
   55,663.22/76,753.43 = 42,887.90/x
3. Step 3: Cross multiply
   55,663.22x = 76,753.43 × 42,887.90
4. Step 4: Simplify right side
   55,663.22x = 3,291,792,832.29
5. Step 5: Solve for x
   x = 3,291,792,832.29/55,663.22
6. Step 6: Final answer
   x = 59,137.67