Finding the Fourth Proportional to 152,955.10, 211,077.85 and 84,978.35

Step by Step Solution

1. Step 1: Write the proportion equation
   152,955.10 : 211,077.85 = 84,978.35 : x
2. Step 2: Convert to fraction form
   152,955.10/211,077.85 = 84,978.35/x
3. Step 3: Cross multiply
   152,955.10x = 211,077.85 × 84,978.35
4. Step 4: Simplify right side
   152,955.10x = 17,937,047,097.59
5. Step 5: Solve for x
   x = 17,937,047,097.59/152,955.10
6. Step 6: Final answer
   x = 117,270.02