Finding the Fourth Proportional to 49,820.62, 74,400.69 and 43,784.50

Step by Step Solution

1. Step 1: Write the proportion equation
   49,820.62 : 74,400.69 = 43,784.50 : x
2. Step 2: Convert to fraction form
   49,820.62/74,400.69 = 43,784.50/x
3. Step 3: Cross multiply
   49,820.62x = 74,400.69 × 43,784.50
4. Step 4: Simplify right side
   49,820.62x = 3,257,596,639.30
5. Step 5: Solve for x
   x = 3,257,596,639.30/49,820.62
6. Step 6: Final answer
   x = 65,386.52