Finding the Fourth Proportional to 364,175.34, 546,243.57 and 139,643.34

Step by Step Solution

1. Step 1: Write the proportion equation
   364,175.34 : 546,243.57 = 139,643.34 : x
2. Step 2: Convert to fraction form
   364,175.34/546,243.57 = 139,643.34/x
3. Step 3: Cross multiply
   364,175.34x = 546,243.57 × 139,643.34
4. Step 4: Simplify right side
   364,175.34x = 76,279,276,568.32
5. Step 5: Solve for x
   x = 76,279,276,568.32/364,175.34
6. Step 6: Final answer
   x = 209,457.56