Finding the Fourth Proportional to 478,300.84, 717,492.56 and 123,311.86

Step by Step Solution

1. Step 1: Write the proportion equation
   478,300.84 : 717,492.56 = 123,311.86 : x
2. Step 2: Convert to fraction form
   478,300.84/717,492.56 = 123,311.86/x
3. Step 3: Cross multiply
   478,300.84x = 717,492.56 × 123,311.86
4. Step 4: Simplify right side
   478,300.84x = 88,475,339,699.47
5. Step 5: Solve for x
   x = 88,475,339,699.47/478,300.84
6. Step 6: Final answer
   x = 184,978.43