Finding the Fourth Proportional to 139,087.71, 208,307.10 and 101,554.69

Step by Step Solution

1. Step 1: Write the proportion equation
   139,087.71 : 208,307.10 = 101,554.69 : x
2. Step 2: Convert to fraction form
   139,087.71/208,307.10 = 101,554.69/x
3. Step 3: Cross multiply
   139,087.71x = 208,307.10 × 101,554.69
4. Step 4: Simplify right side
   139,087.71x = 21,154,562,965.30
5. Step 5: Solve for x
   x = 21,154,562,965.30/139,087.71
6. Step 6: Final answer
   x = 152,095.13