Finding the Fourth Proportional to 156,820.57, 216,364.71 and 88,826.74

Step by Step Solution

1. Step 1: Write the proportion equation
   156,820.57 : 216,364.71 = 88,826.74 : x
2. Step 2: Convert to fraction form
   156,820.57/216,364.71 = 88,826.74/x
3. Step 3: Cross multiply
   156,820.57x = 216,364.71 × 88,826.74
4. Step 4: Simplify right side
   156,820.57x = 19,218,971,840.35
5. Step 5: Solve for x
   x = 19,218,971,840.35/156,820.57
6. Step 6: Final answer
   x = 122,553.90