Finding the Fourth Proportional to 139,978,742.10, 209,968,113.15 and 111,068,351.70

Step by Step Solution

1. Step 1: Write the proportion equation
   139,978,742.10 : 209,968,113.15 = 111,068,351.70 : x
2. Step 2: Convert to fraction form
   139,978,742.10/209,968,113.15 = 111,068,351.70/x
3. Step 3: Cross multiply
   139,978,742.10x = 209,968,113.15 × 111,068,351.70
4. Step 4: Simplify right side
   139,978,742.10x = 23,320,812,237,129,596
5. Step 5: Solve for x
   x = 23,320,812,237,129,596/139,978,742.10
6. Step 6: Final answer
   x = 166,602,527.55