Finding the Fourth Proportional to 1,237,643,333.84, 1,707,980,111.88 and 680,740,992.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,237,643,333.84 : 1,707,980,111.88 = 680,740,992.56 : x
2. Step 2: Convert to fraction form
   1,237,643,333.84/1,707,980,111.88 = 680,740,992.56/x
3. Step 3: Cross multiply
   1,237,643,333.84x = 1,707,980,111.88 × 680,740,992.56
4. Step 4: Simplify right side
   1,237,643,333.84x = 1,162,692,076,633,931,008
5. Step 5: Solve for x
   x = 1,162,692,076,633,931,008/1,237,643,333.84
6. Step 6: Final answer
   x = 939,440,341.85