Finding the Fourth Proportional to 156,091.53, 215,499.12 and 102,470.34

Step by Step Solution

1. Step 1: Write the proportion equation
   156,091.53 : 215,499.12 = 102,470.34 : x
2. Step 2: Convert to fraction form
   156,091.53/215,499.12 = 102,470.34/x
3. Step 3: Cross multiply
   156,091.53x = 215,499.12 × 102,470.34
4. Step 4: Simplify right side
   156,091.53x = 22,082,268,096.10
5. Step 5: Solve for x
   x = 22,082,268,096.10/156,091.53
6. Step 6: Final answer
   x = 141,470.00