Finding the Fourth Proportional to 56,012.48, 77,190.89 and 40,069.25

Step by Step Solution

1. Step 1: Write the proportion equation
   56,012.48 : 77,190.89 = 40,069.25 : x
2. Step 2: Convert to fraction form
   56,012.48/77,190.89 = 40,069.25/x
3. Step 3: Cross multiply
   56,012.48x = 77,190.89 × 40,069.25
4. Step 4: Simplify right side
   56,012.48x = 3,092,980,482.83
5. Step 5: Solve for x
   x = 3,092,980,482.83/56,012.48
6. Step 6: Final answer
   x = 55,219.49