Finding the Fourth Proportional to 101,011.32, 139,337.82 and 63,219.96

Step by Step Solution

1. Step 1: Write the proportion equation
   101,011.32 : 139,337.82 = 63,219.96 : x
2. Step 2: Convert to fraction form
   101,011.32/139,337.82 = 63,219.96/x
3. Step 3: Cross multiply
   101,011.32x = 139,337.82 × 63,219.96
4. Step 4: Simplify right side
   101,011.32x = 8,808,931,406.89
5. Step 5: Solve for x
   x = 8,808,931,406.89/101,011.32
6. Step 6: Final answer
   x = 87,207.37