Finding the Fourth Proportional to 61,300.96, 84,605.18 and 57,298.76

Step by Step Solution

1. Step 1: Write the proportion equation
   61,300.96 : 84,605.18 = 57,298.76 : x
2. Step 2: Convert to fraction form
   61,300.96/84,605.18 = 57,298.76/x
3. Step 3: Cross multiply
   61,300.96x = 84,605.18 × 57,298.76
4. Step 4: Simplify right side
   61,300.96x = 4,847,771,903.58
5. Step 5: Solve for x
   x = 4,847,771,903.58/61,300.96
6. Step 6: Final answer
   x = 79,081.50