Finding the Fourth Proportional to 103,584,863.68, 142,944,903.84 and 56,540,374.72

Step by Step Solution

1. Step 1: Write the proportion equation
   103,584,863.68 : 142,944,903.84 = 56,540,374.72 : x
2. Step 2: Convert to fraction form
   103,584,863.68/142,944,903.84 = 56,540,374.72/x
3. Step 3: Cross multiply
   103,584,863.68x = 142,944,903.84 × 56,540,374.72
4. Step 4: Simplify right side
   103,584,863.68x = 8,082,158,427,427,967
5. Step 5: Solve for x
   x = 8,082,158,427,427,967/103,584,863.68
6. Step 6: Final answer
   x = 78,024,511.89