Finding the Fourth Proportional to 156,412.72, 215,849.76 and 84,792.72

Step by Step Solution

1. Step 1: Write the proportion equation
   156,412.72 : 215,849.76 = 84,792.72 : x
2. Step 2: Convert to fraction form
   156,412.72/215,849.76 = 84,792.72/x
3. Step 3: Cross multiply
   156,412.72x = 215,849.76 × 84,792.72
4. Step 4: Simplify right side
   156,412.72x = 18,302,488,261.75
5. Step 5: Solve for x
   x = 18,302,488,261.75/156,412.72
6. Step 6: Final answer
   x = 117,014.07