Finding the Fourth Proportional to 139,672.47, 192,973.52 and 97,419.63

Step by Step Solution

1. Step 1: Write the proportion equation
   139,672.47 : 192,973.52 = 97,419.63 : x
2. Step 2: Convert to fraction form
   139,672.47/192,973.52 = 97,419.63/x
3. Step 3: Cross multiply
   139,672.47x = 192,973.52 × 97,419.63
4. Step 4: Simplify right side
   139,672.47x = 18,799,408,431.10
5. Step 5: Solve for x
   x = 18,799,408,431.10/139,672.47
6. Step 6: Final answer
   x = 134,596.38