Finding the Fourth Proportional to 65,312.32, 90,181.86 and 50,180.98

Step by Step Solution

1. Step 1: Write the proportion equation
   65,312.32 : 90,181.86 = 50,180.98 : x
2. Step 2: Convert to fraction form
   65,312.32/90,181.86 = 50,180.98/x
3. Step 3: Cross multiply
   65,312.32x = 90,181.86 × 50,180.98
4. Step 4: Simplify right side
   65,312.32x = 4,525,414,113.02
5. Step 5: Solve for x
   x = 4,525,414,113.02/65,312.32
6. Step 6: Final answer
   x = 69,288.83