Finding the Fourth Proportional to 76,674.50, 105,810.84 and 43,140.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76,674.50 : 105,810.84 = 43,140.50 : x
2. Step 2: Convert to fraction form
   76,674.50/105,810.84 = 43,140.50/x
3. Step 3: Cross multiply
   76,674.50x = 105,810.84 × 43,140.50
4. Step 4: Simplify right side
   76,674.50x = 4,564,732,543.02
5. Step 5: Solve for x
   x = 4,564,732,543.02/76,674.50
6. Step 6: Final answer
   x = 59,533.91