Finding the Fourth Proportional to 139,417,047,856.20, 209,221,097,406.45 and 48,658,464,143.88

Step by Step Solution

1. Step 1: Write the proportion equation
   139,417,047,856.20 : 209,221,097,406.45 = 48,658,464,143.88 : x
2. Step 2: Convert to fraction form
   139,417,047,856.20/209,221,097,406.45 = 48,658,464,143.88/x
3. Step 3: Cross multiply
   139,417,047,856.20x = 209,221,097,406.45 × 48,658,464,143.88
4. Step 4: Simplify right side
   139,417,047,856.20x = 10,180,377,266,293,926,002,688
5. Step 5: Solve for x
   x = 10,180,377,266,293,926,002,688/139,417,047,856.20
6. Step 6: Final answer
   x = 73,021,035,969.68