Finding the Fourth Proportional to 115,791,743.36, 173,661,078.72 and 69,118,405.76

Step by Step Solution

1. Step 1: Write the proportion equation
   115,791,743.36 : 173,661,078.72 = 69,118,405.76 : x
2. Step 2: Convert to fraction form
   115,791,743.36/173,661,078.72 = 69,118,405.76/x
3. Step 3: Cross multiply
   115,791,743.36x = 173,661,078.72 × 69,118,405.76
4. Step 4: Simplify right side
   115,791,743.36x = 12,003,176,903,688,262
5. Step 5: Solve for x
   x = 12,003,176,903,688,262/115,791,743.36
6. Step 6: Final answer
   x = 103,661,768.58