Finding the Fourth Proportional to 139,432,575.30, 208,744,976.98 and 105,033,847.87

Step by Step Solution

1. Step 1: Write the proportion equation
   139,432,575.30 : 208,744,976.98 = 105,033,847.87 : x
2. Step 2: Convert to fraction form
   139,432,575.30/208,744,976.98 = 105,033,847.87/x
3. Step 3: Cross multiply
   139,432,575.30x = 208,744,976.98 × 105,033,847.87
4. Step 4: Simplify right side
   139,432,575.30x = 21,925,288,155,743,972
5. Step 5: Solve for x
   x = 21,925,288,155,743,972/139,432,575.30
6. Step 6: Final answer
   x = 157,246,526.56