Finding the Fourth Proportional to 139,897.47, 209,670.60 and 110,198.01

Step by Step Solution

1. Step 1: Write the proportion equation
   139,897.47 : 209,670.60 = 110,198.01 : x
2. Step 2: Convert to fraction form
   139,897.47/209,670.60 = 110,198.01/x
3. Step 3: Cross multiply
   139,897.47x = 209,670.60 × 110,198.01
4. Step 4: Simplify right side
   139,897.47x = 23,105,282,875.51
5. Step 5: Solve for x
   x = 23,105,282,875.51/139,897.47
6. Step 6: Final answer
   x = 165,158.69