Finding the Fourth Proportional to 137,983, 190,416.72 and 78,367

Step by Step Solution

1. Step 1: Write the proportion equation
   137,983 : 190,416.72 = 78,367 : x
2. Step 2: Convert to fraction form
   137,983/190,416.72 = 78,367/x
3. Step 3: Cross multiply
   137,983x = 190,416.72 × 78,367
4. Step 4: Simplify right side
   137,983x = 14,922,387,096.24
5. Step 5: Solve for x
   x = 14,922,387,096.24/137,983
6. Step 6: Final answer
   x = 108,146.56