Finding the Fourth Proportional to 108,773.61, 163,279.61 and 86,427.93

Step by Step Solution

1. Step 1: Write the proportion equation
   108,773.61 : 163,279.61 = 86,427.93 : x
2. Step 2: Convert to fraction form
   108,773.61/163,279.61 = 86,427.93/x
3. Step 3: Cross multiply
   108,773.61x = 163,279.61 × 86,427.93
4. Step 4: Simplify right side
   108,773.61x = 14,111,918,703.51
5. Step 5: Solve for x
   x = 14,111,918,703.51/108,773.61
6. Step 6: Final answer
   x = 129,736.60