Finding the Fourth Proportional to 139,185.76, 208,883.60 and 101,842.18

Step by Step Solution

1. Step 1: Write the proportion equation
   139,185.76 : 208,883.60 = 101,842.18 : x
2. Step 2: Convert to fraction form
   139,185.76/208,883.60 = 101,842.18/x
3. Step 3: Cross multiply
   139,185.76x = 208,883.60 × 101,842.18
4. Step 4: Simplify right side
   139,185.76x = 21,273,161,190.25
5. Step 5: Solve for x
   x = 21,273,161,190.25/139,185.76
6. Step 6: Final answer
   x = 152,840.07