Finding the Fourth Proportional to 1,215,066,625.84, 1,676,783,016.55 and 686,421,005.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,066,625.84 : 1,676,783,016.55 = 686,421,005.50 : x
2. Step 2: Convert to fraction form
   1,215,066,625.84/1,676,783,016.55 = 686,421,005.50/x
3. Step 3: Cross multiply
   1,215,066,625.84x = 1,676,783,016.55 × 686,421,005.50
4. Step 4: Simplify right side
   1,215,066,625.84x = 1,150,979,084,224,581,248
5. Step 5: Solve for x
   x = 1,150,979,084,224,581,248/1,215,066,625.84
6. Step 6: Final answer
   x = 947,255,944.44