Finding the Fourth Proportional to 139,887.32, 209,882.86 and 65,047.64

Step by Step Solution

1. Step 1: Write the proportion equation
   139,887.32 : 209,882.86 = 65,047.64 : x
2. Step 2: Convert to fraction form
   139,887.32/209,882.86 = 65,047.64/x
3. Step 3: Cross multiply
   139,887.32x = 209,882.86 × 65,047.64
4. Step 4: Simplify right side
   139,887.32x = 13,652,384,719.45
5. Step 5: Solve for x
   x = 13,652,384,719.45/139,887.32
6. Step 6: Final answer
   x = 97,595.58