Finding the Fourth Proportional to 139,374.90, 192,327.60 and 77,284.83

Step by Step Solution

1. Step 1: Write the proportion equation
   139,374.90 : 192,327.60 = 77,284.83 : x
2. Step 2: Convert to fraction form
   139,374.90/192,327.60 = 77,284.83/x
3. Step 3: Cross multiply
   139,374.90x = 192,327.60 × 77,284.83
4. Step 4: Simplify right side
   139,374.90x = 14,864,005,870.31
5. Step 5: Solve for x
   x = 14,864,005,870.31/139,374.90
6. Step 6: Final answer
   x = 106,647.65