Finding the Fourth Proportional to 156,058.88, 215,361 and 88,090.16

Step by Step Solution

1. Step 1: Write the proportion equation
   156,058.88 : 215,361 = 88,090.16 : x
2. Step 2: Convert to fraction form
   156,058.88/215,361 = 88,090.16/x
3. Step 3: Cross multiply
   156,058.88x = 215,361 × 88,090.16
4. Step 4: Simplify right side
   156,058.88x = 18,971,184,947.76
5. Step 5: Solve for x
   x = 18,971,184,947.76/156,058.88
6. Step 6: Final answer
   x = 121,564.28