Finding the Fourth Proportional to 55,985.02, 77,259.41 and 30,491.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,985.02 : 77,259.41 = 30,491.50 : x
2. Step 2: Convert to fraction form
   55,985.02/77,259.41 = 30,491.50/x
3. Step 3: Cross multiply
   55,985.02x = 77,259.41 × 30,491.50
4. Step 4: Simplify right side
   55,985.02x = 2,355,755,300.02
5. Step 5: Solve for x
   x = 2,355,755,300.02/55,985.02
6. Step 6: Final answer
   x = 42,078.31