Finding the Fourth Proportional to 87,373.31, 120,495.15 and 64,768.59

Step by Step Solution

1. Step 1: Write the proportion equation
   87,373.31 : 120,495.15 = 64,768.59 : x
2. Step 2: Convert to fraction form
   87,373.31/120,495.15 = 64,768.59/x
3. Step 3: Cross multiply
   87,373.31x = 120,495.15 × 64,768.59
4. Step 4: Simplify right side
   87,373.31x = 7,804,300,967.34
5. Step 5: Solve for x
   x = 7,804,300,967.34/87,373.31
6. Step 6: Final answer
   x = 89,321.34