Finding the Fourth Proportional to 211,928.89, 292,460.71 and 115,131.98

Step by Step Solution

1. Step 1: Write the proportion equation
   211,928.89 : 292,460.71 = 115,131.98 : x
2. Step 2: Convert to fraction form
   211,928.89/292,460.71 = 115,131.98/x
3. Step 3: Cross multiply
   211,928.89x = 292,460.71 × 115,131.98
4. Step 4: Simplify right side
   211,928.89x = 33,671,580,614.51
5. Step 5: Solve for x
   x = 33,671,580,614.51/211,928.89
6. Step 6: Final answer
   x = 158,881.50