Finding the Fourth Proportional to 139,492.37, 192,499.53 and 75,830.16

Step by Step Solution

1. Step 1: Write the proportion equation
   139,492.37 : 192,499.53 = 75,830.16 : x
2. Step 2: Convert to fraction form
   139,492.37/192,499.53 = 75,830.16/x
3. Step 3: Cross multiply
   139,492.37x = 192,499.53 × 75,830.16
4. Step 4: Simplify right side
   139,492.37x = 14,597,270,159.82
5. Step 5: Solve for x
   x = 14,597,270,159.82/139,492.37
6. Step 6: Final answer
   x = 104,645.66