Finding the Fourth Proportional to 104,061.89, 143,485.70 and 76,877.31

Step by Step Solution

1. Step 1: Write the proportion equation
   104,061.89 : 143,485.70 = 76,877.31 : x
2. Step 2: Convert to fraction form
   104,061.89/143,485.70 = 76,877.31/x
3. Step 3: Cross multiply
   104,061.89x = 143,485.70 × 76,877.31
4. Step 4: Simplify right side
   104,061.89x = 11,030,794,202.26
5. Step 5: Solve for x
   x = 11,030,794,202.26/104,061.89
6. Step 6: Final answer
   x = 106,002.25