Finding the Fourth Proportional to 302,109.02, 416,792.43 and 172,978.46

Step by Step Solution

1. Step 1: Write the proportion equation
   302,109.02 : 416,792.43 = 172,978.46 : x
2. Step 2: Convert to fraction form
   302,109.02/416,792.43 = 172,978.46/x
3. Step 3: Cross multiply
   302,109.02x = 416,792.43 × 172,978.46
4. Step 4: Simplify right side
   302,109.02x = 72,096,112,681.06
5. Step 5: Solve for x
   x = 72,096,112,681.06/302,109.02
6. Step 6: Final answer
   x = 238,642.70