Finding the Fourth Proportional to 99,325,789.18, 137,068,501.27 and 54,670,806.54

Step by Step Solution

1. Step 1: Write the proportion equation
   99,325,789.18 : 137,068,501.27 = 54,670,806.54 : x
2. Step 2: Convert to fraction form
   99,325,789.18/137,068,501.27 = 54,670,806.54/x
3. Step 3: Cross multiply
   99,325,789.18x = 137,068,501.27 × 54,670,806.54
4. Step 4: Simplify right side
   99,325,789.18x = 7,493,645,515,659,915
5. Step 5: Solve for x
   x = 7,493,645,515,659,915/99,325,789.18
6. Step 6: Final answer
   x = 75,445,114.28