Finding the Fourth Proportional to 56,991, 78,645.24 and 33,117.48

Step by Step Solution

1. Step 1: Write the proportion equation
   56,991 : 78,645.24 = 33,117.48 : x
2. Step 2: Convert to fraction form
   56,991/78,645.24 = 33,117.48/x
3. Step 3: Cross multiply
   56,991x = 78,645.24 × 33,117.48
4. Step 4: Simplify right side
   56,991x = 2,604,532,162.80
5. Step 5: Solve for x
   x = 2,604,532,162.80/56,991
6. Step 6: Final answer
   x = 45,700.76