Finding the Fourth Proportional to 56,289.35, 84,530.61 and 49,978.49

Step by Step Solution

1. Step 1: Write the proportion equation
   56,289.35 : 84,530.61 = 49,978.49 : x
2. Step 2: Convert to fraction form
   56,289.35/84,530.61 = 49,978.49/x
3. Step 3: Cross multiply
   56,289.35x = 84,530.61 × 49,978.49
4. Step 4: Simplify right side
   56,289.35x = 4,224,711,823.93
5. Step 5: Solve for x
   x = 4,224,711,823.93/56,289.35
6. Step 6: Final answer
   x = 75,053.49