Finding the Fourth Proportional to 101,580.72, 140,196.90 and 63,346.50

Step by Step Solution

1. Step 1: Write the proportion equation
   101,580.72 : 140,196.90 = 63,346.50 : x
2. Step 2: Convert to fraction form
   101,580.72/140,196.90 = 63,346.50/x
3. Step 3: Cross multiply
   101,580.72x = 140,196.90 × 63,346.50
4. Step 4: Simplify right side
   101,580.72x = 8,880,982,925.85
5. Step 5: Solve for x
   x = 8,880,982,925.85/101,580.72
6. Step 6: Final answer
   x = 87,427.84