Finding the Fourth Proportional to 66,784.08, 91,670.88 and 59,061.12

Step by Step Solution

1. Step 1: Write the proportion equation
   66,784.08 : 91,670.88 = 59,061.12 : x
2. Step 2: Convert to fraction form
   66,784.08/91,670.88 = 59,061.12/x
3. Step 3: Cross multiply
   66,784.08x = 91,670.88 × 59,061.12
4. Step 4: Simplify right side
   66,784.08x = 5,414,184,844.19
5. Step 5: Solve for x
   x = 5,414,184,844.19/66,784.08
6. Step 6: Final answer
   x = 81,069.99