Finding the Fourth Proportional to 101,445.54, 152,043.68 and 56,978.82

Step by Step Solution

1. Step 1: Write the proportion equation
   101,445.54 : 152,043.68 = 56,978.82 : x
2. Step 2: Convert to fraction form
   101,445.54/152,043.68 = 56,978.82/x
3. Step 3: Cross multiply
   101,445.54x = 152,043.68 × 56,978.82
4. Step 4: Simplify right side
   101,445.54x = 8,663,269,189.96
5. Step 5: Solve for x
   x = 8,663,269,189.96/101,445.54
6. Step 6: Final answer
   x = 85,398.23