Finding the Fourth Proportional to 860,068.86, 1,186,896.42 and 478,092.30

Step by Step Solution

1. Step 1: Write the proportion equation
   860,068.86 : 1,186,896.42 = 478,092.30 : x
2. Step 2: Convert to fraction form
   860,068.86/1,186,896.42 = 478,092.30/x
3. Step 3: Cross multiply
   860,068.86x = 1,186,896.42 × 478,092.30
4. Step 4: Simplify right side
   860,068.86x = 567,446,039,299.57
5. Step 5: Solve for x
   x = 567,446,039,299.57/860,068.86
6. Step 6: Final answer
   x = 659,768.15