Finding the Fourth Proportional to 102,088.96, 153,445.76 and 84,670.72

Step by Step Solution

1. Step 1: Write the proportion equation
   102,088.96 : 153,445.76 = 84,670.72 : x
2. Step 2: Convert to fraction form
   102,088.96/153,445.76 = 84,670.72/x
3. Step 3: Cross multiply
   102,088.96x = 153,445.76 × 84,670.72
4. Step 4: Simplify right side
   102,088.96x = 12,992,362,980.15
5. Step 5: Solve for x
   x = 12,992,362,980.15/102,088.96
6. Step 6: Final answer
   x = 127,265.11