Finding the Fourth Proportional to 139,326.16, 192,300.72 and 91,583.94

Step by Step Solution

1. Step 1: Write the proportion equation
   139,326.16 : 192,300.72 = 91,583.94 : x
2. Step 2: Convert to fraction form
   139,326.16/192,300.72 = 91,583.94/x
3. Step 3: Cross multiply
   139,326.16x = 192,300.72 × 91,583.94
4. Step 4: Simplify right side
   139,326.16x = 17,611,657,602.44
5. Step 5: Solve for x
   x = 17,611,657,602.44/139,326.16
6. Step 6: Final answer
   x = 126,405.96