Finding the Fourth Proportional to 98,961.06, 148,404.72 and 39,776.78

Step by Step Solution

1. Step 1: Write the proportion equation
   98,961.06 : 148,404.72 = 39,776.78 : x
2. Step 2: Convert to fraction form
   98,961.06/148,404.72 = 39,776.78/x
3. Step 3: Cross multiply
   98,961.06x = 148,404.72 × 39,776.78
4. Step 4: Simplify right side
   98,961.06x = 5,903,061,898.40
5. Step 5: Solve for x
   x = 5,903,061,898.40/98,961.06
6. Step 6: Final answer
   x = 59,650.35