Finding the Fourth Proportional to 139,086.71, 208,305.60 and 101,553.69

Step by Step Solution

1. Step 1: Write the proportion equation
   139,086.71 : 208,305.60 = 101,553.69 : x
2. Step 2: Convert to fraction form
   139,086.71/208,305.60 = 101,553.69/x
3. Step 3: Cross multiply
   139,086.71x = 208,305.60 × 101,553.69
4. Step 4: Simplify right side
   139,086.71x = 21,154,201,548.95
5. Step 5: Solve for x
   x = 21,154,201,548.95/139,086.71
6. Step 6: Final answer
   x = 152,093.63