Finding the Fourth Proportional to 139,667.53, 192,740.83 and 76,005.31

Step by Step Solution

1. Step 1: Write the proportion equation
   139,667.53 : 192,740.83 = 76,005.31 : x
2. Step 2: Convert to fraction form
   139,667.53/192,740.83 = 76,005.31/x
3. Step 3: Cross multiply
   139,667.53x = 192,740.83 × 76,005.31
4. Step 4: Simplify right side
   139,667.53x = 14,649,326,533.81
5. Step 5: Solve for x
   x = 14,649,326,533.81/139,667.53
6. Step 6: Final answer
   x = 104,887.13