Finding the Fourth Proportional to 475,113, 712,738.98 and 138,109.86

Step by Step Solution

1. Step 1: Write the proportion equation
   475,113 : 712,738.98 = 138,109.86 : x
2. Step 2: Convert to fraction form
   475,113/712,738.98 = 138,109.86/x
3. Step 3: Cross multiply
   475,113x = 712,738.98 × 138,109.86
4. Step 4: Simplify right side
   475,113x = 98,436,281,262.25
5. Step 5: Solve for x
   x = 98,436,281,262.25/475,113
6. Step 6: Final answer
   x = 207,184.99