Finding the Fourth Proportional to 156,086.61, 215,399.52 and 84,466.63

Step by Step Solution

1. Step 1: Write the proportion equation
   156,086.61 : 215,399.52 = 84,466.63 : x
2. Step 2: Convert to fraction form
   156,086.61/215,399.52 = 84,466.63/x
3. Step 3: Cross multiply
   156,086.61x = 215,399.52 × 84,466.63
4. Step 4: Simplify right side
   156,086.61x = 18,194,071,558.02
5. Step 5: Solve for x
   x = 18,194,071,558.02/156,086.61
6. Step 6: Final answer
   x = 116,563.95