Finding the Fourth Proportional to 102,114.32, 140,906.96 and 56,784.98

Step by Step Solution

1. Step 1: Write the proportion equation
   102,114.32 : 140,906.96 = 56,784.98 : x
2. Step 2: Convert to fraction form
   102,114.32/140,906.96 = 56,784.98/x
3. Step 3: Cross multiply
   102,114.32x = 140,906.96 × 56,784.98
4. Step 4: Simplify right side
   102,114.32x = 8,001,398,342.89
5. Step 5: Solve for x
   x = 8,001,398,342.89/102,114.32
6. Step 6: Final answer
   x = 78,357.26