Finding the Fourth Proportional to 139,030.56, 208,166.76 and 96,806.88

Step by Step Solution

1. Step 1: Write the proportion equation
   139,030.56 : 208,166.76 = 96,806.88 : x
2. Step 2: Convert to fraction form
   139,030.56/208,166.76 = 96,806.88/x
3. Step 3: Cross multiply
   139,030.56x = 208,166.76 × 96,806.88
4. Step 4: Simplify right side
   139,030.56x = 20,151,974,555.31
5. Step 5: Solve for x
   x = 20,151,974,555.31/139,030.56
6. Step 6: Final answer
   x = 144,946.37