Finding the Fourth Proportional to 605,065.59, 907,603.59 and 172,781.94

Step by Step Solution

1. Step 1: Write the proportion equation
   605,065.59 : 907,603.59 = 172,781.94 : x
2. Step 2: Convert to fraction form
   605,065.59/907,603.59 = 172,781.94/x
3. Step 3: Cross multiply
   605,065.59x = 907,603.59 × 172,781.94
4. Step 4: Simplify right side
   605,065.59x = 156,817,509,031.17
5. Step 5: Solve for x
   x = 156,817,509,031.17/605,065.59
6. Step 6: Final answer
   x = 259,174.40