Finding the Fourth Proportional to 64,435.86, 88,921.38 and 36,141.57

Step by Step Solution

1. Step 1: Write the proportion equation
   64,435.86 : 88,921.38 = 36,141.57 : x
2. Step 2: Convert to fraction form
   64,435.86/88,921.38 = 36,141.57/x
3. Step 3: Cross multiply
   64,435.86x = 88,921.38 × 36,141.57
4. Step 4: Simplify right side
   64,435.86x = 3,213,758,279.77
5. Step 5: Solve for x
   x = 3,213,758,279.77/64,435.86
6. Step 6: Final answer
   x = 49,875.31