Finding the Fourth Proportional to 139,848.83, 192,985.54 and 79,419.29

Step by Step Solution

1. Step 1: Write the proportion equation
   139,848.83 : 192,985.54 = 79,419.29 : x
2. Step 2: Convert to fraction form
   139,848.83/192,985.54 = 79,419.29/x
3. Step 3: Cross multiply
   139,848.83x = 192,985.54 × 79,419.29
4. Step 4: Simplify right side
   139,848.83x = 15,326,773,403.59
5. Step 5: Solve for x
   x = 15,326,773,403.59/139,848.83
6. Step 6: Final answer
   x = 109,595.29