Finding the Fourth Proportional to 493,981.31, 740,973.80 and 120,004.31

Step by Step Solution

1. Step 1: Write the proportion equation
   493,981.31 : 740,973.80 = 120,004.31 : x
2. Step 2: Convert to fraction form
   493,981.31/740,973.80 = 120,004.31/x
3. Step 3: Cross multiply
   493,981.31x = 740,973.80 × 120,004.31
4. Step 4: Simplify right side
   493,981.31x = 88,920,051,749.52
5. Step 5: Solve for x
   x = 88,920,051,749.52/493,981.31
6. Step 6: Final answer
   x = 180,006.91