Finding the Fourth Proportional to 128,582,105.76, 177,443,171.10 and 69,844,817.52

Step by Step Solution

1. Step 1: Write the proportion equation
   128,582,105.76 : 177,443,171.10 = 69,844,817.52 : x
2. Step 2: Convert to fraction form
   128,582,105.76/177,443,171.10 = 69,844,817.52/x
3. Step 3: Cross multiply
   128,582,105.76x = 177,443,171.10 × 69,844,817.52
4. Step 4: Simplify right side
   128,582,105.76x = 12,393,485,905,649,636
5. Step 5: Solve for x
   x = 12,393,485,905,649,636/128,582,105.76
6. Step 6: Final answer
   x = 96,385,774.93