Finding the Fourth Proportional to 104,300.16, 143,906.88 and 61,868.16

Step by Step Solution

1. Step 1: Write the proportion equation
   104,300.16 : 143,906.88 = 61,868.16 : x
2. Step 2: Convert to fraction form
   104,300.16/143,906.88 = 61,868.16/x
3. Step 3: Cross multiply
   104,300.16x = 143,906.88 × 61,868.16
4. Step 4: Simplify right side
   104,300.16x = 8,903,253,876.94
5. Step 5: Solve for x
   x = 8,903,253,876.94/104,300.16
6. Step 6: Final answer
   x = 85,361.84