Finding the Fourth Proportional to 90,453.89, 124,744.69 and 56,465.52

Step by Step Solution

1. Step 1: Write the proportion equation
   90,453.89 : 124,744.69 = 56,465.52 : x
2. Step 2: Convert to fraction form
   90,453.89/124,744.69 = 56,465.52/x
3. Step 3: Cross multiply
   90,453.89x = 124,744.69 × 56,465.52
4. Step 4: Simplify right side
   90,453.89x = 7,043,773,663.23
5. Step 5: Solve for x
   x = 7,043,773,663.23/90,453.89
6. Step 6: Final answer
   x = 77,871.43