Finding the Fourth Proportional to 151,393.02, 208,927.35 and 83,412.78

Step by Step Solution

1. Step 1: Write the proportion equation
   151,393.02 : 208,927.35 = 83,412.78 : x
2. Step 2: Convert to fraction form
   151,393.02/208,927.35 = 83,412.78/x
3. Step 3: Cross multiply
   151,393.02x = 208,927.35 × 83,412.78
4. Step 4: Simplify right side
   151,393.02x = 17,427,211,081.53
5. Step 5: Solve for x
   x = 17,427,211,081.53/151,393.02
6. Step 6: Final answer
   x = 115,112.38