Finding the Fourth Proportional to 76,681.56, 105,820.50 and 43,147.56

Step by Step Solution

1. Step 1: Write the proportion equation
   76,681.56 : 105,820.50 = 43,147.56 : x
2. Step 2: Convert to fraction form
   76,681.56/105,820.50 = 43,147.56/x
3. Step 3: Cross multiply
   76,681.56x = 105,820.50 × 43,147.56
4. Step 4: Simplify right side
   76,681.56x = 4,565,896,372.98
5. Step 5: Solve for x
   x = 4,565,896,372.98/76,681.56
6. Step 6: Final answer
   x = 59,543.60