Finding the Fourth Proportional to 120,118,047.20, 165,763,126.32 and 65,113,733.60

Step by Step Solution

1. Step 1: Write the proportion equation
   120,118,047.20 : 165,763,126.32 = 65,113,733.60 : x
2. Step 2: Convert to fraction form
   120,118,047.20/165,763,126.32 = 65,113,733.60/x
3. Step 3: Cross multiply
   120,118,047.20x = 165,763,126.32 × 65,113,733.60
4. Step 4: Simplify right side
   120,118,047.20x = 10,793,456,047,903,628
5. Step 5: Solve for x
   x = 10,793,456,047,903,628/120,118,047.20
6. Step 6: Final answer
   x = 89,857,072.27