Finding the Fourth Proportional to 175,061.18, 262,421.73 and 139,435.58

Step by Step Solution

1. Step 1: Write the proportion equation
   175,061.18 : 262,421.73 = 139,435.58 : x
2. Step 2: Convert to fraction form
   175,061.18/262,421.73 = 139,435.58/x
3. Step 3: Cross multiply
   175,061.18x = 262,421.73 × 139,435.58
4. Step 4: Simplify right side
   175,061.18x = 36,590,926,127.15
5. Step 5: Solve for x
   x = 36,590,926,127.15/175,061.18
6. Step 6: Final answer
   x = 209,017.93