Finding the Fourth Proportional to 860,141.34, 1,187,035.56 and 478,174.50

Step by Step Solution

1. Step 1: Write the proportion equation
   860,141.34 : 1,187,035.56 = 478,174.50 : x
2. Step 2: Convert to fraction form
   860,141.34/1,187,035.56 = 478,174.50/x
3. Step 3: Cross multiply
   860,141.34x = 1,187,035.56 × 478,174.50
4. Step 4: Simplify right side
   860,141.34x = 567,610,135,385.22
5. Step 5: Solve for x
   x = 567,610,135,385.22/860,141.34
6. Step 6: Final answer
   x = 659,903.33