Finding the Fourth Proportional to 139,174.47, 208,436.87 and 101,641.53

Step by Step Solution

1. Step 1: Write the proportion equation
   139,174.47 : 208,436.87 = 101,641.53 : x
2. Step 2: Convert to fraction form
   139,174.47/208,436.87 = 101,641.53/x
3. Step 3: Cross multiply
   139,174.47x = 208,436.87 × 101,641.53
4. Step 4: Simplify right side
   139,174.47x = 21,185,841,867.00
5. Step 5: Solve for x
   x = 21,185,841,867.00/139,174.47
6. Step 6: Final answer
   x = 152,225.06