Finding the Fourth Proportional to 71,430.81, 98,554.56 and 56,276.43

Step by Step Solution

1. Step 1: Write the proportion equation
   71,430.81 : 98,554.56 = 56,276.43 : x
2. Step 2: Convert to fraction form
   71,430.81/98,554.56 = 56,276.43/x
3. Step 3: Cross multiply
   71,430.81x = 98,554.56 × 56,276.43
4. Step 4: Simplify right side
   71,430.81x = 5,546,298,797.02
5. Step 5: Solve for x
   x = 5,546,298,797.02/71,430.81
6. Step 6: Final answer
   x = 77,645.75