Finding the Fourth Proportional to 156,443.01, 215,891.82 and 84,823.05

Step by Step Solution

1. Step 1: Write the proportion equation
   156,443.01 : 215,891.82 = 84,823.05 : x
2. Step 2: Convert to fraction form
   156,443.01/215,891.82 = 84,823.05/x
3. Step 3: Cross multiply
   156,443.01x = 215,891.82 × 84,823.05
4. Step 4: Simplify right side
   156,443.01x = 18,312,602,642.45
5. Step 5: Solve for x
   x = 18,312,602,642.45/156,443.01
6. Step 6: Final answer
   x = 117,056.06