Finding the Fourth Proportional to 123,487,287.57, 185,247,964.83 and 71,696,281.05

Step by Step Solution

1. Step 1: Write the proportion equation
   123,487,287.57 : 185,247,964.83 = 71,696,281.05 : x
2. Step 2: Convert to fraction form
   123,487,287.57/185,247,964.83 = 71,696,281.05/x
3. Step 3: Cross multiply
   123,487,287.57x = 185,247,964.83 × 71,696,281.05
4. Step 4: Simplify right side
   123,487,287.57x = 13,281,590,150,392,196
5. Step 5: Solve for x
   x = 13,281,590,150,392,196/123,487,287.57
6. Step 6: Final answer
   x = 107,554,311.15