Finding the Fourth Proportional to 101,181.50, 139,631.02 and 56,469.50

Step by Step Solution

1. Step 1: Write the proportion equation
   101,181.50 : 139,631.02 = 56,469.50 : x
2. Step 2: Convert to fraction form
   101,181.50/139,631.02 = 56,469.50/x
3. Step 3: Cross multiply
   101,181.50x = 139,631.02 × 56,469.50
4. Step 4: Simplify right side
   101,181.50x = 7,884,893,883.89
5. Step 5: Solve for x
   x = 7,884,893,883.89/101,181.50
6. Step 6: Final answer
   x = 77,928.22