Finding the Fourth Proportional to 345,978.84, 519,038.28 and 146,298.92

Step by Step Solution

1. Step 1: Write the proportion equation
   345,978.84 : 519,038.28 = 146,298.92 : x
2. Step 2: Convert to fraction form
   345,978.84/519,038.28 = 146,298.92/x
3. Step 3: Cross multiply
   345,978.84x = 519,038.28 × 146,298.92
4. Step 4: Simplify right side
   345,978.84x = 75,934,739,802.66
5. Step 5: Solve for x
   x = 75,934,739,802.66/345,978.84
6. Step 6: Final answer
   x = 219,477.99