Finding the Fourth Proportional to 1,420,688,096.42, 1,960,562,258.69 and 785,651,558.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,420,688,096.42 : 1,960,562,258.69 = 785,651,558.50 : x
2. Step 2: Convert to fraction form
   1,420,688,096.42/1,960,562,258.69 = 785,651,558.50/x
3. Step 3: Cross multiply
   1,420,688,096.42x = 1,960,562,258.69 × 785,651,558.50
4. Step 4: Simplify right side
   1,420,688,096.42x = 1,540,318,794,073,141,248
5. Step 5: Solve for x
   x = 1,540,318,794,073,141,248/1,420,688,096.42
6. Step 6: Final answer
   x = 1,084,206,165.98