Finding the Fourth Proportional to 156,019.94, 215,307.52 and 84,400.01

Step by Step Solution

1. Step 1: Write the proportion equation
   156,019.94 : 215,307.52 = 84,400.01 : x
2. Step 2: Convert to fraction form
   156,019.94/215,307.52 = 84,400.01/x
3. Step 3: Cross multiply
   156,019.94x = 215,307.52 × 84,400.01
4. Step 4: Simplify right side
   156,019.94x = 18,171,956,360.94
5. Step 5: Solve for x
   x = 18,171,956,360.94/156,019.94
6. Step 6: Final answer
   x = 116,472.01