Finding the Fourth Proportional to 107,931, 148,944.78 and 63,219

Step by Step Solution

1. Step 1: Write the proportion equation
   107,931 : 148,944.78 = 63,219 : x
2. Step 2: Convert to fraction form
   107,931/148,944.78 = 63,219/x
3. Step 3: Cross multiply
   107,931x = 148,944.78 × 63,219
4. Step 4: Simplify right side
   107,931x = 9,416,140,046.82
5. Step 5: Solve for x
   x = 9,416,140,046.82/107,931
6. Step 6: Final answer
   x = 87,242.22