Finding the Fourth Proportional to 101,317, 139,817.46 and 56,613.64

Step by Step Solution

1. Step 1: Write the proportion equation
   101,317 : 139,817.46 = 56,613.64 : x
2. Step 2: Convert to fraction form
   101,317/139,817.46 = 56,613.64/x
3. Step 3: Cross multiply
   101,317x = 139,817.46 × 56,613.64
4. Step 4: Simplify right side
   101,317x = 7,915,575,346.15
5. Step 5: Solve for x
   x = 7,915,575,346.15/101,317
6. Step 6: Final answer
   x = 78,126.82