Finding the Fourth Proportional to 137,942, 190,360.16 and 78,326

Step by Step Solution

1. Step 1: Write the proportion equation
   137,942 : 190,360.16 = 78,326 : x
2. Step 2: Convert to fraction form
   137,942/190,360.16 = 78,326/x
3. Step 3: Cross multiply
   137,942x = 190,360.16 × 78,326
4. Step 4: Simplify right side
   137,942x = 14,910,149,892.16
5. Step 5: Solve for x
   x = 14,910,149,892.16/137,942
6. Step 6: Final answer
   x = 108,089.99