Finding the Fourth Proportional to 98,970,810.56, 136,573,155.20 and 54,915,017.52

Step by Step Solution

1. Step 1: Write the proportion equation
   98,970,810.56 : 136,573,155.20 = 54,915,017.52 : x
2. Step 2: Convert to fraction form
   98,970,810.56/136,573,155.20 = 54,915,017.52/x
3. Step 3: Cross multiply
   98,970,810.56x = 136,573,155.20 × 54,915,017.52
4. Step 4: Simplify right side
   98,970,810.56x = 7,499,917,210,569,679
5. Step 5: Solve for x
   x = 7,499,917,210,569,679/98,970,810.56
6. Step 6: Final answer
   x = 75,779,082.42