Finding the Fourth Proportional to 139,968,476.10, 209,952,714.15 and 136,982,492.10

Step by Step Solution

1. Step 1: Write the proportion equation
   139,968,476.10 : 209,952,714.15 = 136,982,492.10 : x
2. Step 2: Convert to fraction form
   139,968,476.10/209,952,714.15 = 136,982,492.10/x
3. Step 3: Cross multiply
   139,968,476.10x = 209,952,714.15 × 136,982,492.10
4. Step 4: Simplify right side
   139,968,476.10x = 28,759,846,007,425,932
5. Step 5: Solve for x
   x = 28,759,846,007,425,932/139,968,476.10
6. Step 6: Final answer
   x = 205,473,738.15