Finding the Fourth Proportional to 382,300.56, 573,092.67 and 129,404.07

Step by Step Solution

1. Step 1: Write the proportion equation
   382,300.56 : 573,092.67 = 129,404.07 : x
2. Step 2: Convert to fraction form
   382,300.56/573,092.67 = 129,404.07/x
3. Step 3: Cross multiply
   382,300.56x = 573,092.67 × 129,404.07
4. Step 4: Simplify right side
   382,300.56x = 74,160,523,985.17
5. Step 5: Solve for x
   x = 74,160,523,985.17/382,300.56
6. Step 6: Final answer
   x = 193,984.87